In the Context of Determining Pricing Models, Which of the Following

In the context of determining pricing models, which of the following best defines cost-plus pricing?

A) A model in which a desired profit margin is added to the cost of a product as deemed appropriate
B) A model in which a firm builds its customer base by selling its products at operational losses
C) A model in which a product is sold at as low a price as possible while still generating minimal profits
D) A model in which promotional tactics are used to improve the visibility of a product in the market