can i get a walkthrough as to why this question would be wrong?

Last month, Galt Company sold its product for $70 per unit. Fixed production costs were $25,000, and variable production costs amounted to $11 per unit. Fixed selling and administrative costs totaled $20,000, and variable selling and administrative costs amounted to $5 per unit. The company produced and sold 8,000 units last month. Using a contribution margin income statement, which of the following answers is the total contribution margin? $432,000 $472,000 $560,000 $387,000