Find the Center of Mass of the Lamina Bounded by the Graphs

Multiple Choice

Find the center of mass of the lamina bounded by the graphs of the equations $y = 7 x ^ { 2 } , y = 0$ , and $x = 6$ for the density $\rho = k x y$

A) $\left( 63 , \frac { 24 } { 7 } \right)$
B) $\left( \frac { 36 } { 7 } , 126 \right)$
C) $\left( \frac { 24 } { 7 } , 126 \right)$
D) $\left( 126 , \frac { 36 } { 7 } \right)$
E) $\left( \frac { 24 } { 7 } , 63 \right)$