The answer is A.10
When comparing the power consumption of LCD (liquid crystal display) and LED (light emitting diode display), we need to consider the basic working principles and energy consumption characteristics of both.
The working principle of LCD display is to change the transmission or reflection of light by controlling the arrangement of liquid crystal molecules to display images. It does not emit light by itself, but requires a backlight source (such as CCFL cold cathode fluorescent lamp or LED backlight) to illuminate the screen. Although LED backlight technology has greatly improved the energy efficiency of LCD display, the overall power consumption of LCD display is still higher than that of LED display, mainly due to the energy consumption of the backlight source.
LED display is composed of a large number of LED lamp beads, each of which can emit light directly without a backlight source. The luminous efficiency of LED lamp beads is very high, and the brightness can be adjusted by precise current control. Therefore, when displaying the same brightness and color, the power consumption of LED display is much lower than that of LCD display.
Specifically to the options in the question, the power consumption of LCD display is not a fixed multiple of LED display, but this multiple is usually much less than 1000 and much greater than 10. However, to answer this question, we can consider a rough range. In most cases, the power consumption of LCD displays may be several to dozens of times that of LED displays, but it is unlikely to be hundreds or thousands of times.
Therefore, among the given options, although there is no precise answer, we can judge based on common sense and the energy consumption characteristics of LED and LCD displays that option A (10 times) is the upper limit of a relatively reasonable estimated range. In fact, this multiple may vary depending on the specific display model, brightness setting, working environment and other factors, but it is usually not as high as given in options B, C, and D.
In summary, the power consumption of LCD displays may be several to dozens of times that of LED displays, but in this multiple-choice question, the closest and reasonable answer is A (10 times), although this is only a rough estimate.