Two identical metal plates show photoelectric effect by a light of wavelength `lambda_(A)` falls on plate `A` and `lambda_(B)` on plate `B(lambda_(A) = 2 lambda_(B))`. The maximum kinetic energy is
A. `2 K_(A) = K_(B)`
B. `K_(A) lt K_(B)//2`
C. `K_(A) = 2K_(B)`
D. `K_(A)=K_(B)//2`
