Task: Question Answering
Input (English): Question: The price of raw materials has gone up by 15%, labour cost has also increased from 25% of the cost of raw material to 30% of the cost of raw material. By how much percentage should there be reduction in the usage of raw materials so as to keep the cost same?

 Option A: 28%

 Option B: 17%

 Option C: 27%

 Option D: 24%

 Option E: Cannot determined
Output (English): Option B