Task: Question Answering
Input (English): Question: The average age of a husband and a wife is 25 years when they were married five years ago but now the average age of the husband, wife and child is 21 years(the child was born during the interval). What is the present age of the child?

 Option A: 3 years

 Option B: 5 years

 Option C: 9 years

 Option D: 4 years

 Option E: 1 years
Output (English): Option A