45. Sales The sales S (in thousands of units) of a scasonal product are given by the model S = 74.50 + 43.75 sin πt
where t is the time in months, with t = 1 corresponding to January. Find the average sales for the first quarter (0 ≤ t ≤ 3)
a. 223.5 b. 151.1 c. 74.5 d. 216.7 e. None of the above