Find the Volume of the Solid Bounded Above by the Plane

Multiple Choice

Find the volume of the solid bounded above by the plane $z = 10 - x - 2 y$ and below by the triangle with vertices (0, 0) , (1, 0) , and (0, 1) in the first quadrant of the xy plane.

A) $\frac { 20 } { 3 }$
B) $\frac { 23 } { 6 }$
C) $4$
D) $\frac { 8 } { 3 }$