Task: Question Answering
Input (English): Question: A grocer purchased a quantity of bananas at 3 pounds for $0.50 and sold the entire quantity at 4 pounds for $1.00. How many pounds did the grocer purchase if the profit from selling the bananas was $7.00?

 Option A:  40

 Option B:  84

 Option C:  90

 Option D:  120

 Option E:  240
Output (English): Option B