A plot of the kinetic energy 1/2mv2 ) of ejected electrons as a function of the frequency (ν) of incident radiation for four alkali metals (M1, M2, M3, M4) is shown below. The alkali metals M1, M2, M3 and M4 are, respectively –
(A) Li, Na, K, and Rb
(B) Rb, K, Na, and Li
(C) Na, K, Li, and Rb
(D) Rb, Li, Na, and K
