Find the Number C That Satisfies the Conclusion of the Mean

Multiple Choice

Find the number c that satisfies the conclusion of the Mean Value Theorem on the given interval. $f ( x ) = 2 \sqrt { x }$ , $[ 0,9 ]$

A) $c =$ $\frac { 9 } { 4 }$
B) $c = 5$
C) $c = 0$
D) $c = \frac { 1 } { 3 }$
E) None of these