While on the lifeboat, why does Pi throw himself at the hyena?

Ahe no longer cared about the zebra

Bhe was hopeless and angry after the zebra's death

Che was attempting to secure a food source

Dhe wanted to see if he was stronger than the hyena

The author regularly mentions the story of Pi will have a happy ending. Why?

AHe doesn't want to become depressed.

BHe wants readers to finish the story.

CIt's a lie. There is no happy ending.

DHe likes to increase plot suspense.