Ananya goes to a store to buy a mobile phone costing Rs. 15, 675. The rate of sales tax is 10%. She asks the store keeper to allow a discount to such an extent that she has to pay Rs. 15,675 inclusive of sales tax. Find the amount of discount to be allowed by the shopkeeper.
A. Rs. 1220
B. Rs. 1567
C. Rs. 1375
D. Rs. 1425