Which of the following have to be true about functions in the consumer duality picture: 0 A. The expenditure function is homogeneous of degree 'I in prices O B. The compensated demand functions are homogeneous of degree 1 in prices. 0 C. The uncompensated demand functions are homogeneous of degree 1 in prices. 0 D. Both (a)and (b). O E. Both (b)and (c). O F. Both (a)and (c). O G. All ofthe above. O H. None of the above