Task: Question Answering
Input (English): Question: Two pens and one eraser cost Rs. 35 and 3 pencil and four erasers cost Rs. 65. Find the cost of pencil and eraser separately.

 Option A: 5,15

 Option B: 15,5

 Option C: 5,10

 Option D: 10,5

 Option E: 20,5
Output (English): Option B