If p=125×243×16/405, how many digits are in p? Choose the correct choice from the following options
A) 1 B) 2 C) 3 D) 4 E) 5

Rationale: p = 125 * 243 * 16 / 405 p = 5 ^ 3 * 3 * 9 ^ 2 * 4 ^ 2 / ( 5 * 9 ^ 2 ) p = 5 ^ 2 * 3 * 4 ^ 2 p = 20 ^ 2 * 3 = 1200 answer d
Answer: D