Three containers have their volumes in the ratio 3 : 4 : 5.
They are full of mixtures of milk and water. The mixtures
contain milk and water in the ratio of 4 : 1, 3 : 1 and 5 :
2 respectively. The contents of all these three containers
are poured into a fourth container. The ratio of milk and
water in the fourth container is

(a) 5 : 2

(b) 157 : 53

(c) 151 : 48

(d) 4 : 1