Which of the following represents the profit from the investment of x dollars at n percent compound annual interest for 2 years? Options:
A) 5x (1+n/100)^2 - x
B) 2x (1+n/100)^4 - x
C) 3x (1+n/100)^3 - x
D) x (1+n/100)^2 - x
E) x (1+n/100)^6 - x
Amount after 2 years compounded yearly = x (1+n/100)^2   Thus profit = Final amount - original principle = x (1+n/100)^2 - x . Answer : x (1+n/100)^2 - x
<result>D</result>
Which of the following represents the profit from the investment of x dollars at n percent compound annual interest for 2 years?