A man sold a radio and a TV set together for ₹30,400 thereby making a frofit of 25% on the radio and 10% on TV set.By selling them together for ₹30,700, he would have made a 10% profit on the radio and 25% on the TV set.The cost price of the ratio is:

A

₹10,000

B

₹12,000

C

₹8,000

D

₹9,000