KI Corporation produces 10,000 units of K101 each week for use in the assembly of its finished products. The unit cost of K101 is based on a production level of 10,000 units per week as follows: Variable cost per unit $45 Fixed cost per unit 20 K101 also can be purchased from an outside supplier at $50 per unit. If K101 is purchased from the outside supplier, 30% of KIs fixed production costs can be eliminated. How much would KIs variable costs need to change to match the outside suppliers costs? Select one: a. increase by $1 b. remain the same. c. decrease by $1 d. increase by $15