Santhosh buys a refrigerator for Rs.12,000.He pays Rs.6000 cash and agrees to pay the balance in annual installments of Rs.500 together with $12\%$ interest on the unpaid amount.How much will the refrigerator cost him?

Question

$\begin{array}{1 1}(A) \;Rs.16,650\\(B)\;Rs.16,000 \\(C)\;Rs.16,500 \\(D)\;Rs16,680 \end{array}$