Suppose a consumer's expenditure function is E(Px, Py, u) = u x + . The hicksian demand functions for goods x and y respectively are: O a. hx (Px, Py, u) = W/SI hy (P x, Py , u) = N/SI O b. hx ( P x , Py , u ) = u Py 3 2 hy (P x , Py, u) = ' 2 3 O c. hx (Px, Py, u ) = 4 + hy (Px, Py , u ) = + ex O d. hx (Px, Py, u) = u u 3 px hy (P x, Py, u ) = 2Py