Arlene makes earrings in the shape of the mascot of a local university. last year, arlene made 250 pairs of earrings, which she sold to the university bookstore for $10 each. arlene works out of her home; her only cost is $3 per pair of earrings for materials and $85 for tax . if arlene did not produce earrings, she would spend her time babysitting her nephews and make about $500 per year. which statement is true? a) arlene's cconomic profit is $1,665. b) arlene's total revenue is $2,500 c) arlene's total implicit costs are $83. d) arlene's accounting profit is s1,65 29.