Task: Question Answering
Input (English): Question: Person X joins a job at 20 yrs. First 3 years salary = 10,000 p.a. Afterwards every year increment of 2,000 per year for 10 years. Then salary becomes constant till retirement. At retirement average salary is 25,000. (throughout career). At what age he retires?

 Option A: 50

 Option B: 60

 Option C: 40

 Option D: 70

 Option E: 80
Output (English): Option A