Which best describes the main conflict of the novel? The Hobbit

A.
Bilbo must kill the dragon in order to become a hero.

B.
Gandalf trusts Bilbo to live up to his expectations.

C.
The dwarves lack confidence in Bilbo's abilities as a burglar and an adventurer.

D.
The influences of the Bagginses and the Tooks pull Bilbo in opposite directions.