A farmer grows watermelons and cantaloupes. Let X represent the weight of a watermelon, and let Y represent the weight of a cantaloupe. The mean of X is 12 pounds, and the mean of Y is 3 pounds. Which answer choice correctly calculates and interprets the mean of the sum, S = X + Y? ; the sum of the weight of any watermelon and cantaloupe is 7.5 pounds. ; this farmer can expect the total weight of a watermelon and a cantaloupe, on average, to be 7.5 pounds. ; the sum of the weight of any watermelon and cantaloupe is 15 pounds. ; this farmer can expect the total weight of a watermelon and a cantaloupe, on average, to be 15 pounds.

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