Find the least number of complete years in which a sum of money put out at 25% compound interest will be more than double of itself?  Pick one
A) 3	B) 6	C) 9	D) 4	E) 3
4 years   Answer: 4
<result>D</result>
Find the least number of complete years in which a sum of money put out at 25% compound interest will be more than double of itself?