A product consists of 2 ounces of oil ($2 per ounce) and 1 ounce of powder ($8 per ounce). Each man hour ($24 per hour) produces 12 units of product. Variable overhead is at $4 per labor hour. Fixed overhead is applied at $8 per labor hour.

A. The standard cost of a unit of product is $13. B. The standard cost of a unit of product is $15. C. The standard cost of a unit of product is $24. D. The standard cost of a unit of product is $36. E. None of these.