answers are A, D, and D but I need help with how to work them?

The Melville Corporation produces a single product called a Pong. Melville has the capacity to produce 60,000 Pongs each year. If Melville produces at capacity, the per unit costs to produce and sell one Pong are as follows: Direct materials Direct labor Variable manufacturing overhead Fixed manufacturing overhead Variable selling expense Fixed selling expense $ 15 $ 12 $ 8 $ 9 $ 8 $ 3 The regular selling price for one Pong is $80. A special order has been received by Melville from Mowen Corporation to purchase 6,000 Pongs next year. If this special order is accepted, the variable selling expense will be reduced by 75%. However, Melville will have to purchase a specialized machine to engrave the Mowen name on each Pong in the special order. This machine will cost $9,000 and it will have no use after the special order is filled. The total fixed manufacturing overhead and selling expenses would be unaffected by this special order. Assume that direct labor is a variable cost. 28) Assume Melville anticipates selling only 50,000 units of Pong to regular customers next year. If Mowen Corporation offers to buy the special order units at $65 per unit, the annual financial advantage (disadvantage) for the company as a result of accepting this special order should be: A) $159,000 B) $36,000 C) ($90,000) D) $60,000 29) Assume Melville anticipates selling only 50,000 units of Pong to regular customers next year. At what selling price for the 6,000 special order units would Melville be financially indifferent between accepting or rejecting the special order from Mowen? A) $49.00 per unit B) $37.00 per unit C) $51.50 per unit D) $38.50 per unit 30) Assume Melville can sell 58,000 units of Pong to regular customers next year. If Mowen Corporation offers to buy the 6,000 special order units at $65 per unit, the annual financial advantage (disadvantage) for Melville as a result of accepting this special order should be: A) $192,000 B) $47,000 C) $36,000 D) $11,000