A sum was invested at simple interest at $$x%$$ p.a. for 2 years. Had it been invested at ($$x$$ + 4)% , for the same time, it would have fetched ₹1,800 more. What is the simple interest on the same sum for $$5\frac{2}{3}$$ years at 8% p.a.?

A

₹10,200

B

₹10,336

C

₹9,520

D

₹10,064