A and B are friends. A is elder to B by 5 years. B's sister C is half the age of B while A's father D is 8 years older than twice the age of B. If the present age of D is 48 years, then find the present ages of A, B and C (in years).
A. 10, 20, 35
B. 25, 15, 10
C. 25, 20, 10
D. 25, 20, 40