Dotty was shopping in Supermart. Several tables in the market were covered with assorted canned foods on Special sale! $25\%$ off.Dotty was having a Guest for dinner that evening and purchased two cans of tuna, packed by Canco, from one of the tables displaying the cans. Before Guest arrived, Dotty prepared a tuna casserole which she and Guest ate. Both became ill and the medical testimony established that the illness was caused by the tuna's being unfit for consumption.The tuna consumed by Dotty and Guest came from a case that was at the top of one of the stacks in the back room of Supermart, and no evidence was presented that the case had been dropped or damaged by any of Supermarts employees.What sort of claim can Dotty assert against Canco?