Harman sells his mobiles on 10% discount on marked price. He bought a mobile @Rs.900 and wants to get 10% profit. What should be the marked price?

A 1275

B 1250

C 1175

D 1100

E None of these

Correct Answer: Option D

Profit of 10% on 900 = 0.9 × Marked price - 900

⇒ 0.1 × 900 = 0.9 × M - 900

⇒ M = 1100