Weis Markets is a supermarket chain with stores in the Mid-Atlantic region of the US. Its top competitors include Food Giant, Kroger, and Shur-Save. Suppose Weis Markets has a low price guarantee on food products. The low-price guarantee is a program in which Weis Markets will match any lower price offered by other rival supermarkets if a customer can document that a lower price exists at a rival store using a special smart-phone app. Answer the following questions (a) Which pricing strategy would best describe the Weis low-price guarantee program: preannouncement, precommitment, price leadership, or price visibility? Explain. (b) Supermarkets in the US do not meet the definition of a cartel, Explain why