Container P and container Q contains water and milk in the ratio 5 : 7 and 6 : 5 respectively. 72 liters and 77 liters of mixture from container P and container Q, respectively is taken out and put into another container R. If initially container P contains 108 liters of mixture, then find the ratio of the amount of water present initially in the container P to the amount of water present in container R.
A)5 : 8 B)6 : 7 C)11 : 13 D)8 : 5 E)None of these