Which of the Following Are True About Functions in the Duality

Multiple Choice

Which of the following are true about functions in the duality picture:

A) Compensated demand functions are homogeneous of degree zero in prices.
B) Uncompensated demand functions are homogeneous of degree zero.
C) Expenditure functions are homogeneous of degree zero.
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.