Which of the following situations appears to involve non est factum? Select one: 0 a. A beneficiary and an insurance company negotiated a life insurance policy, both unaware that the subject of the life insurance policy was in fact already dead. b. Two parties agreed to send goods by a particular ship but there were two ships with that name and each party was thinking of a different ship. O c. X, who spoke little English, signed a document granting Y an option to sell X's house, believing it to be a receipt. This belief was encouraged by Y. O d. X purchased goods on credit from Y, believing Y to be Z and unaware that Y had purchased Z's business. Y was aware of X's mistake