Reuben, the Market Gardener Had a Reputation for Growing the Biggest

Reuben, the market gardener had a reputation for growing the biggest potatoes in the district. Barb, a gourmet cook, pre-ordered 7 kilograms of potatoes at the market garden. Reuben said that he would weigh and package them and that Barb could return and pick them up when she had completed her shopping. She paid Reuben the $15 price before she left. While she was shopping, a truck, owned by Norbert, backed into Reuben's market garden stall, destroying 100% of his vegetables. Who owns the potatoes?

A) Reuben, title did not transfer until the goods were weighed and packaged.
B) Reuben, he had not yet given possession of the potatoes to Barb.
C) Reuben, the contract was unfulfilled.
D) Barb, she had already paid for the potatoes and Reuben was doing her a favour.
E) Norbert, he negligently destroyed the potatoes.