The correct option is A Gains Rs. 10.
By selling 8 pens, the company gains (Rs. 8) x 5 = Rs. 40.
By selling 13 pencils, the company loses (Rs. 2) x 15 = Rs. 30.
We consider gain/ profit to be a positive number and loss to be a negative number.
Thus, overall profit/ loss = (Rs. 40) + (-Rs. 30) = Rs. 10
Since this is a positive number, it denotes profit.