01 January Beginning inventory 0 Units produced 500 Units sold 400 Ending inventory 100 Excerpt from Wallis Corporation Per Unit Per Month Selling price $ 100 Direct materials 30 Direct labor 20 Variable manufacturing overhead 10 Variable selling and administrative expenses 7 Fixed manufacturing overhead $ 10,000 Fixed selling and administrative expenses 3,000 What is the company's contribution margin for January?

A. $24,000
B. $30,000
C. $32,000
D. $40,000

Gary becker's controversial the economics of discrimination concludes that price discrimination has no effect on final profits. price discrimination benefits monopolies. labor discrimination in hiring results in more efficient allocations of production. discrimination in hiring practices has no effect on final profits. labor discrimination harms firms that practice it due to increased labor costs. price discrimination harms monopolies, which refutes over two centuries of economic theory.