Most large nurseries sell raspberry plants primarily to commercial raspberry growers and sell only plants that are guaranteed to be disease-free. However, the shipment of raspberry plants that Johnson received from Wally' s Plants carried a virus that commonly afflicts raspberries. Which one of the following is most strongly supported by the information above? ["Wally's Plants is probably not a large, well-run nursery if it sells its raspberry plants primarily to commercial raspberry growers.", "If Wally's Plants is a large nursery, then the raspberry plants that Johnson received in the shipment were probably not entirely as they were guaranteed to be.", "If Johnson is a commercial raspberry grower and Wally's Plants is not a large nursery, then the shipment of raspberry plants that Johnson received was probably guaranteed to be disease-free.", "If Johnson is not a commercial raspberry grower, then Wally's Plants is probably not a large nursery."]