In 1930 a person's age was 8 times that of his son. In 1938 the father’s age becomes 10 times the age of his son’s age in 1930. The ages of father and son in 1940 were respectively:

A) 58 and 16 years

B) 50 and 15 years

C) 42 and 14 years

D) 34 and 13 years

This MCQ is part of the UP PSC Previous Year Questions (PYQs) series, focusing on UPPSC Prelims 2010 (GS Paper I)