Find the compound interest on $1200 for 4 years at 20% p.a. if CI is component yearly? Choose one.
A) $ 120	B) $ 150	C) $ 1288	D) $ 250	E) $ 300

Rationale: "a = p ( 1 + r / 100 ) ^ t = 1200 ( 1 + 20 / 100 ) ^ 4 = $ 2488 ci = $ 1288 answer is c"
Answer: C