Which of the following statements are correct?

A. In a photon-particle collision number of photons are conserved.
B. The photoelectric current is directly proportional to the intensity of incident light.
C. The photoelectric emission is an instantaneous process.
D. Maximum kinetic energy of photoelectrons depend on the intensity of incident radiation.
E. The threshold frequency is different for different metals.

Choose the correct answer from the options given below:

B, C and E only

The correct answer is Option (1) - B, C and E only