Why does Roderick Usher refuse to leave the house? （ ）

A、Roderick Usher fears to go outside because he was hurt when he went out last time.

B、Roderick Usher is too weak to bear the coldness and the violent wind outside the house.

C、He has suffered from his hypersensitiveness for a long time and he is weak in his body.
D、It is part of the whole claustrophobia which Roderick Usher fails to cope with and implies that this family never marry people outside of the family.