What Is the Most Common Cause for a Bailor to Incur

What is the most common cause for a bailor to incur liability with respect to goods provided under a contractual bailment?

A) the 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) the breach of the bailor's duty of care regarding the provision of adequate instruction for use
D) the injury of a bailee's employee while using or operating a bailed chattel