A mobile phone is available for ₹79,860 by cash payment or by paying cash of ₹60,000 as down payment and the remaining amount in three equal annual instalments. If the shopkeeper charges interestat the rate of 10% per annum compounded annually, then the amountof each instalment (in ₹) will be:

A

7,986

B

6,789

C

6,689

D

6,000