If the price of rice falls by $$2\frac{1}{2}\%$$, a person can buy 9 kg more of rice for ₹1,260 than before. If the price had risen by $$12\frac{1}{2}\%$$, how much rice would he have bought for the same sum?

A

310 kg

B

312 kg

C

315 kg

D

320 kg