Cpt- i am unable to solve this question.please help

X sent goods to B at 125% of cost which is invoice price. The rate of commission is 10% on sales at IP and 25% of any surplus realised above IP. 10% of the goods sent out on consignment , invoice value of which is Rs.12500 were destroyed. 75% of the total consignment is sold by B at Rs .100000. What will be the amount of commission payable to B? A. Rs.10937.50 B. Rs.9700 C. Rs.10000