Task: Question Answering
Input (English): Question: Margaret is 9 years more than twice the age of his son. The age of son is 12. Find the age of mother and find the difference between their ages

 Option A: 21yrs

 Option B: 20yrs

 Option C: 30yrs

 Option D: 40yrs

 Option E: 50yrs
Output (English): Option A