The correct answer is B.
An epic is a long narrative poem which deals with a serious subject. It is focused on the actions of heroic or quasi divine men who has to save their tribe, nation, or the human race.
On the other hand, a mock epic is a satire that mocks the stereotipes of heroes and epic literature. In this type of works, the hero is shown as a fool, or his heroic characteristic are so exagerated that they become absurd.