Which of the Following Have to Be True About Functions

Which of the following have to be true about functions in the duality picture:

A) The expenditure function is homogeneous of degree 1 in prices.
B) The compensated demand functions are homogeneous of degree 1 in prices.
C) The uncompensated demand functions are homogeneous of degree 1 in prices.
D) Both (a) and (b) .
E) Both (b) and (c) .
F) Both (a) and (c) .
G) All of the above.
H) None of the above.