Mary Takes Her Engagement Ring to Sparkles Jewellers for Cleaning

Mary takes her engagement ring to Sparkles Jewellers for cleaning and appraisal.She is to pay for the work when she picks up the ring.While the jeweller's back is turned,someone slips behind the counter and steals a number of the boxes containing repaired jewellery,including Mary's ring.

A) Since this is a bailment for reward and the jeweller was negligent,Mary can sue the jeweller successfully.
B) Since Mary has not yet paid the jeweller,this is a gratuitous bailment and he would be liable only if he were grossly negligent.
C) Since the bailment was for Mary's benefit,she cannot sue the jeweller.
D) Since the bailment is not complete until the possession of the ring is returned to Mary,bailment law is not applicable here.
E) If Mary's ring were insured,the insurer would be the only party with any liability to compensate for the loss of the ring.