A man bought two shirts for Rs. 650. He sold one of them at a gain of 7% and the other at a loss of 6%. On the whole he neither gained nor lost ? The cost of the shirts, respectively, were

1. Rs. 300, Rs. 350

2. Rs. 330, Rs. 320

3. Rs. 350, Rs. 300

4. Rs. 320, Rs. 330