Composite Company produces 2,000 parts per year, which are used in the assembly of one of its products. The unit product cost of these parts is: Variable manufacturing cost $64 Fixed manufacturing cost 36 $100 Unit product cost The part can be purchased from an outside supplier at $80 per unit. The variable manufacturing cost is completely relevant. Fixed costs: If the part is purchased from the outside supplier, two-thirds of the fixed manufacturing costs can be eliminated (i.e. are avoidable). Part (a) What cost per unit, if any, is relevant to this decision? This includes all variable cost per unit plus the relevant portion of fixed cost per unit. [Select] What cost per unit is irrelevant? [Select] Part (b) What would the annual impact on the company's net operating income be as a result of buying the part from the outside supplier? Remember, they need 2,000 units. [Select]