4. M agpie Corporation sells a single product at a selling price of $200 and variable cost per unit of $80. The company is currently selling 6,000 units per month. Fixed expenses are $300,000 per month. The marketing manager believes that a $20,000 increase inthe monthly advertising budget would result in a 5% increase in the number of units sold per month. Should the advertising budget be increased? (circle one): Yes No Support your answer with appropriate computations