The difference between the compound interest compounded annually and simple interest for 2 years at 20% per annum is Rs.144. Find the principal?  Choose one:	A) 3629	B) 3608	C) 3600	D) 3613	E) 6192

Rationale: "p = 144 ( 100 / 5 ) 2 = > p = 3600 answer : c"
Answer: C