Suppose F(x) Is an Antiderivative Of $\frac { 2 } { \sqrt { x } }$

Multiple Choice

Suppose f(x) is an antiderivative of $\frac { 2 } { \sqrt { x } }$ and f(0) = 1. What is f(9) ?

A) 13
B) - $\frac { 4 } { 3 }$
C) 1
D) -4
E) none of these