[Stolen Bicycle] Jason Borrowed His Friend Sabrina's Bicycle

[Stolen Bicycle] Jason borrowed his friend Sabrina's bicycle. She told him that she was happy to let him to use it for free, but that she would appreciate him taking good care of it. Jason said nothing in reply. Jason lived in a high crime neighborhood, but he left the bicycle unlocked on his deck anyway. The next morning, he discovered that the bicycle had been stolen. Jason told Sabrina that he was very sorry about the bicycle. Sabrina told him that she expected him to pay for it. Jason refused on the basis that a thief took the bicycle. Jason told Sabrina that he believes he knows the identity of the thief and that since only Sabrina has the right to sue to recover the property, he has no further responsibility.
-Which of the following statements is true regarding Jason's obligation to Sabrina?

A) He is liable for the theft of the bicycle arising out of his ordinary or gross negligence.
B) He is liable for the theft of the bicycle arising out of his gross negligence.
C) He is liable for the theft of the bailed property caused by even the slightest lack of due care on his part.
D) He is strictly liable for the theft of the bicycle.
E) He is not liable for the theft of the bicycle because of the doctrine of assumption of the risk.