The population of a village is 10000. It increases annually at the rate of 20% p.a. What will be its population after 2 years?  Choose the most appropriate option.
A) 10000  B) 12000  C) 13000  D) 14000  E) 14400

Rationale: "formula : ( after = 100 denominator ago = 100 numerator ) 10000 × 120 / 100 × 120 / 100 = 14400 e"
Answer: E