By Fubini's Theorem, the Double Integral $\iint$ R $\sqrt { x y } d A$

Multiple Choice

By Fubini's Theorem, the double integral $\iint$ R $\sqrt { x y } d A$ with $R = \{ ( x , y ) : 0 \leq x \leq 1,0 \leq y \leq 1 \}$ is

A) $\frac { 41 } { 9 }$
B) $\frac { 29 } { 4 }$
C) $\frac { 13 } { 9 }$
D) $\frac { 1 } { 2 }$
E) $\frac { 4 } { 9 }$