Use Fubini's Theorem to evaluate the double integral ( ∬_R f(x,y) , dA ), where ( f(x,y)=2x²-7x²y+2y ) and ( R=[0,2]×[3,4] ), by first integrating with respect to ( y ) and then with respect to ( x ):
a) ( -14 )
b) ( 14 )
c) ( -28 )
d) ( 28 )