The marked price of an article is ₹480. After a discount of 18% on the marked price, a shopkeeper earns a profit of ₹63.60. His percentage gain is:

A

$$19\frac{1}{11}$$

B

$$19\frac{3}{11}$$

C

$$13\frac{1}{4}$$

D

$$13\frac{3}{4}$$