Paul invited several friends over to celebrate Ann’s birthday. About an hour before the guests arrived Paul bought some sparkling wine and put it in his refrigerator. When all the guests were assembled, Paul lifted the chilled bottle of wine from its gift box. Before it was completely out of the box, the bottle exploded sending glass in all directions. The glass cut Paul's hand and also the eye of one of his guests, Joan. No one else was hurt at all. Assuming all these facts could be proved, which of the following is true?
a. Because Joan did not buy the wine, she has no cause of action against anyone.
b. Joan could sue Paul successfully for the tort of negligence for buying and serving sparkling wine.
c. All the guests, including Joan, could successfully sue the manufacturer for negligence; they need only prove that the explosion was the fault of the manufacturing process.
d. If Joan sued the manufacturer for negligence, the court could rely on circumstantial evidence to determine negligence on the part of the manufacturer.
e. A manufacturer owes a duty of care only to its customers, the ones paying for the product.