AMC 10 2014b Problem 7

Suppose $A>B>0$ and A is $x$% greater than $B$. What is $x$? $\textbf {(A) } 100\left(\frac{A-B}{B}\right) \textbf {(B) } 100\left(\frac{A+B}{B}\right) \textbf {(C) } 100\left(\frac{A+B}{A}\right) \textbf {(D) } 100\left(\frac{A-B}{A}\right) \textbf {(E) } 100\left(\frac{A}{B}\right)$