Which of the Following Explains Why Heats of Hydrogenation Cannot

Multiple Choice

Which of the following explains why heats of hydrogenation cannot be used to determine the relative stability of compounds A and B below?

A) Compound A is trisubstituted while compound B is monosubstituted.
B) Compound A has E configuration while compound B has no E/Z configuration.
C) Both compounds A and B have no E/Z configurations.
D) Hydrogenation of A and B give different alkanes.