Find the Flux of the Curl of Field F Through $\pi$

Multiple Choice

Find the flux of the curl of field F through the shell S.
-F = (x-y) i + (x-z) j + (y-z) k; S is the portion of the cone z = 3 below the plane z = 5

A) 50/9 $\pi$
B) - 100/9 $\pi$
C) 100/9
D) - 50/9 $\pi$