A certain sum amounts to ₹4,600 after 5 years and to ₹6,000 after 8 years at the same rate of simple interest per annum. What will be the simple interest on a sum of ₹8,500 for $$6\frac{1}{2}$$ years at the same rate?

A

₹10,515

B

₹10,215

C

₹11,375

D

₹11,460