Integrate the Function F Over the Given Region $\frac { 125 } { 12 }$

Multiple Choice

Integrate the function f over the given region.
-f(x, y) = xy over the triangular region with vertices (0, 0) , (5, 0) , and (0, 10)

A) $\frac { 125 } { 12 }$
B) $\frac { 25 } { 12 }$
C) $\frac { 125 } { 6 }$
D) $\frac { 625 } { 6 }$