Assertion $(A)$: In the photoelectric effect,on increasing the intensity of light,both the number of electrons emitted and the kinetic energy of each of them increase,but the photoelectric current remains unchanged.
Reason $(R)$: The photoelectric current depends only on the wavelength of light.

• A
  Both $(A)$ and $(R)$ are true but $(R)$ is not the correct explanation of $(A)$.
• B
  $(A)$ is true but $(R)$ is false.
• C
  $(A)$ and $(R)$ both are false.
• D
  Both $(A)$ and $(R)$ are true and $(R)$ is the correct explanation of $(A)$.