Dotterel Corporation uses the variable cost concept of product pricing. Below is cost information for the production and sale of 35,000 units of its sole product. Dotterel desires a profit equal to a 11.2% rate of return on invested assets of $350,000. The variable cost per unit for the production and sale of the companys product is: a. $14.00 b. $11.20 c. $9.80 d. $12.60