The Oceanside Garden Nursery buys owering plants in four-inch pots for $1.00 each and sells them for $2.50 each. Management budgets monthly fixed costs of $2,100 for sales volumes between 0 and 5,000 plants. Data has been summarized below; DATA Description Sales price per unit 1|i\"Variable cost per unit Total fixed costs Prot at hreakeven Target prot Required; a) Compute the contribution margin per unit. ( 04 marks) b) Use the contribution margin approach to compute the company's monthly breakeven point in units. [04 marks) c) Use the contribution margin ratio approach to compute the hreakeven point in sales dollars. [04 marks) d) Use the contribution margin approach to compute the monthly sales level (in units) required to earn a target operating income of $5,000. (04 marks) e) Compute the company's margin of safety. (04 marks) Total, 20 marks