The inclusion of all product and period costs necessary for making and marketing a product or service is a distinguishing feature of the calculation for A : required rate of return. B : market price. C : target cost. D : desired profit.

The correct answer is the option B: market price.

Explanation:

To begin with, the concept known as "Market Price" in the field of marketing and business refers to the specific number that will contain all the costs as well as the margin wanted to end up formulating what the customers will pay when they are wanting to buy the product or service. Therefore that the market price must include all product and period costs that are necessary for making and marketing as well the product or service itself. It is obvious that the marketing costs are as important as all the direct costs that are needed for the proper production of the product due to the fact that without it the product may not be sell to any one.