Which of the Following Denotes the Most Common Cause for a Bailor

Which of the following denotes the most common cause for a bailor incurring liability with respect to goods provided under a contractual bailment?

A) breach of bailor's warranty to provide a bailed chattel fit for its intended use
B) the injury of a bailor while using or operating a bailed chattel
C) breach of the bailor's duty of care regarding provision of adequate instruction for use
D) the injury of a bailee's employee while using or operating a bailed chattel