Tom anderson, the produce manager at the thriftway market in pasco, washington, removed a box of bananas from the top of a stack of produce. when he reached for a lug of radishes that had been under the bananas, a six-inch spider—heteropoda venatoria, commonly called a banana spider—leaped from some wet burlap onto his left hand and bit him. nine months later he died of heart failure. his wife brought an action against associated grocers, parent company of thriftway market, on theories of (1) strict products liability under restatement, section 402(a); (2) breach of the implied warranty of merchantability; and (3) negligence. the trial court ruled against the plaintiff on all three theories. was that a correct ruling? explain.