Task: Question Answering
Input (English): Question: An empty fuel tank with a capacity of 212 gallons was filled partially with fuel A and then to capacity with fuel B. Fuel A contains 12% ethanol by volume and fuel B contains 16% ethanol by volume. If the full fuel tank contains 30 gallons of ethanol, how many gallons of fuel A were added?

 Option A: 160

 Option B: 98

 Option C: 100

 Option D: 80

 Option E: 50
Output (English): Option B