A certain sum borrowed at 7.5% p.a. at simple interest amounts to ₹16,950 in $$5\frac{1}{2}$$ years. What will be the simple interest (in ₹) on the same sum at the same rate in $$8\frac{1}{4}$$ years?

A

8,415

B

6,806

C

7,425

D

6,188