Ribco Co., makes and sells only one product. The selling price is $30, Fixed cost is $400,000. The company always incurs a loss even though it increases the amount of sales. On the other hand, the amount of loss equals to $400,000 so the company's variable cost would be:

Select one:

a. $40

b. $30

c. $13.33

d. 0

e. $20