Heinz makes most of its money from ketchup and​ prepared, packaged foods that are substitutes for fresh foods. Revenue tends to be low in the second quarter​ (May, June, and​ July). Can you provide a possible reason for this​ pattern? ​(Hint​: Fresh fruits and vegetables are substitutes for many Heinz prepared​ foods, and ketchup is commonly used on food prepared at outdoor​ cookouts.) Revenue for Heinz tends to be low in the second quarter because