Which Statement Is True About Energy Transfer

Which statement is true about energy transfer?

A) Vegetarianism is equally as energy efficient as eating meat.
B) All of the energy from one trophic level is transferred to the next trophic level.
C) Energy is lost between trophic levels as heat,metabolism,and waste.
D) Indigestible plant parts transfer energy to the next trophic level.
E) all of the above