Price = $20
Variable cost = $12
Therefore the contribution margin = price - variable cost = 20 - 12 = $8.
The contribution margin is used to pay the total fixed costs. Since these costs equal $6000, the factory needs to sell the following amount of products:
[tex] \frac{6,000}{8} =750[/tex]
Therefore, the total break-even revenue = price * break-even amount = 20 * 750 = $15,000
Hence, the correct answer is D. $15,000