Answer:
The answer is 24 A ....using I = V/R
B, is older
Because if you look on the scale b is deeper
The wavelength and frequency of light are closely related. The higher the frequency, the shorter the wavelength. Because all light waves move through a vacuum at the same speed, the number of wave crests passing by a given point in one second depends on the wavelength. That number, also known as the frequency, will be larger for a short-wavelength wave than for a long-wavelength wave.
Palm of your hand should be the correct answer if i remember correctly