A, B, C started a partnership business where A invests 3 times as much as B and B invests $$\frac{2}{3}$$ of what C invests. The ratio of their profits at the end of the year is

A

2 : 3 : 6

B

3 : 2 : 4

C

6 : 2 : 3

D

6 : 1 : 2