72. Campfire Soup Company is in the business of making canned soups. It uses only the latest, state-of-the-art machinery to blend, cook, and can the soups; it maintains high safety standards; and it conducts rigorous inspections constantly. A particular can of the company’s Cream of Snail soup is sold to Wholesaler, who is a distributor for Campfire’s products. Wholesaler resells the can to Retailer. In Retailer’s store, it is bought by Charles, a consumer. Charles prepares the soup, and serves it to Gaia, a houseguest and friend of his. As Gaia is eating the soup, she bites down, and sufferes a terrible gash in her gum. The gash turns out to have been caused by a small fragment of glass in the soup. All available evidence suggests that the glass was in the soup at the time the can was opened by Charles. The glass is a type used in Campfire’s canning equipment, and the most likely (though still somewhat speculative) explanation is that there was a once-in-a-million breakage of the machinery during the making of the batch that included this can. Gaia has sued all people concerned (Campfire, Wholesaler, Retailer, and Charles). Against which of them can she recover, assuming that she produces no evidence other than that already described in this question? _________________