Karen Corporation has compiled the following information from the accounting system for the one product it sells:

Sales price . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $900 per unit
Fixed costs (for the month) 
Marketing and administrative . . . . . . . . . . . . . . . . . . . $108,000
Manufacturing overhead . . . . . . . . . . . . . . . . . . . . . . . $162,000
Variable costs (per unit) 
Marketing and administrative . . . . . . . . . . . . . . . . . . . $18
Direct materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $270
Manufacturing overhead . . . . . . . . . . . . . . . . . . . . . . . $60
Direct labor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $165
Units produced and sold (for the month). . . . . . . . . . . 1,800

Required: Determine each of the following unit costs: 
a. Variable manufacturing costs.
b. Variable cost.
c. Full absorption cost.
d. Full cost.