please help - choices given

a - $44

b - $64

c - $73

d - $84

Burnt industries currently manutactures and sells 24,000 powed sawi per month, although it has the copacily to prothuce 39,000 inits per moith At the 24,000-unn-per-month level of production, the per-uait cost is 573 , cansiting of $44 in vartable cocts and $29 in fixed cobits. Hutrin selis ns sows to retail stores for 584 each. Allen Dntrbusors has offeced to purchawe 5.400 sinw: per month at a reduced proce burns can manulachure these addinonal unes weh no change in its present lieveli of fined matufacturing costs. Gurns decided fo accept the special orifer for 5,400 unie from Allen at a unat soles price that will add 5108000 per menthito asi oferaing income the uhit trice Blars is tharging Alen isi modnderigosia Frin