The following is Pinecrest Corporation's contribution format income statement for last month:

Sales	$1,400,000
Less: variable expenses	900,000
Contribution margin	500,000
Less: fixed expenses	300,000
Operating income	$200,000

The company has no beginning or ending inventories and produced and sold 10,000 units during the month. a) What is the company's break-even in units? 4 POINTS b) If sales increase by 100 units, by how much should operating income increase? 4 POINTS c) How many units would the company have to sell to attain target operating income of $225,000? 4 POINTS d) What is the company's margin of safety in dollars? 3 POINTS e) What is the company's degree of operating leverage? 3 POINTS

Pls show calculations do without excel