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this si the answer and I rlly hope this helped since this si thr correct answer
Answer:
c. lower shelf because its cloest to the freezer and heat rises and cold air sinks.
TU increases with an increase in consumption of a commodity as long as MU is positive. In this phase, TU increases but a diminishing rate as MU from each successive unit tends to diminish. ... When consumption is increased beyond the point of satiety, TU starts falling as MU becomes negative.
