Darcy Received a Widget from Rachel Under a Bailment

Darcy received a widget from Rachel under a bailment.The widget was damaged while it was in his possession.As a result,Rachel has sued Darcy.Which of the following statements is TRUE with respect to Darcy's liability?

A) If the bailment was for Rachel's benefit,Darcy cannot be held liable.
B) Darcy will be treated as an insurer if the bailment was both gratuitous and for his benefit.
C) Once Rachel proves that the widget was damaged while in Darcy's possession,the burden of proof necessarily will shift.
D) If the burden of proof shifts to Darcy,he cannot possibly avoid liability by merely proving that he exercised reasonable care.
E) If Darcy is a common carrier,then he may be relieved of liability if the damage was caused by an act of God.