Mister Green wants to participate in the Black & White partnership. Before Green's admission, the profit-sharing ratio was 2/5 for White and 3/5 for Black. Green buys one third of White's profit shares plus half of Black's profit shares. What will be the new profit-sharing ratio for the partnership for B: W: G?

A) 1:3:1
B) 2:3:1
C) 1:2:3
D) 3:1:2