In a game of cards, A and B together had four times as much money as ‘R’, while R and B together had three times as much as A. What fraction of the total money did R have in the game?

A

$$\frac{1}{7}$$

B

$$\frac{1}{5}$$

C

$$\frac{1}{12}$$

D

$$\frac{2}{9}$$