21 Select the correct answer. A trigonometric function models the monthly rainfall of a city, which reaches a maximum monthly rainfall of 8 inches in the spring and fall and a minimum monthly rainfall of 0 inches in the summer and winter. If t) models the monthly rainfall t months from when the monthly rainfall started being recorded for the city, what is the domain of function r? OA (-0, 0) Ов. [В, о] Oc [0, 8] O D. [0, o0)

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