55. Gallerani Corporation has received a request for a special order of 6,000 units of product A90 for $21.20cach. Product A9O's unit product cast is $16 ? n, determined es follows: Direct laber is a variable cost. The special order would have no effect on the oompany's total fixed manufacturing overhead costs. The customer would like modifications made to product A90 that would increase the variable costs by $4.20 per anit and that webulh renuire an investment of $34,000 in special molds that would have no salvage value: This special order would have no effect on the company's other sules, The company has ample spare capactity for producing the special order. If the specinl order is accepted, the companys overall net operiting income would increase (decrease) by: A. ($18,600) B. (5,6,200) C. $30,000 D. $5,400