The simple interest on a sum of money will be Rs.700 after 10 years. If the principal is trebled after 5 years what will be the total interest at the end of the tenth year?  Choose the correct choice from the following choices
A) 2261	B) 2888	C) 1400	D) 2699	E) 2771

Rationale: "p - - - 10 - - - - 700 p - - - 5 - - - - - 350 3 p - - - 5 - - - - - 1050 - - - - - - = > 1400 answer : c"
Answer: C