In a family of 4 persons, A and B are husband and wife. C and D are daughter and son of A and B respectively. D's age 8 years ago was 2 years. The ratio of the present ages of mother and daughter is 7 : 1. The sum of the present ages of A, B, and C is 80 years. At the time of the birth of C, the age of A was equal to the present age of B. Find the present age of A.

Options

A. 30 years
B. 35 years
C. 40 years
D. 45 years