(II) For radiation of frequency $v > v_2$ incident on the surfaces of A and B, the maximum kinetic energy of ejected electron is (A) greater for metal A because it has a smaller work function. (B) greater for metal B because it has a larger work function. (C) greater for metal B because it has higher threshold frequency. (D) the same for both metal A and metal B because it is independent of work functions of metals.