In the Context of Testing a New Product, Which of the Following

In the context of testing a new product, which of the following is true of test marketing?

A) It refers to a type of market testing in which a representative piece of the total market is chosen for a dress rehearsal.
B) It refers to a type of market testing that involves the sale of a (primarily) consumer product by a maker directly to a consuming unit.
C) It refers to a type of market testing that involves presenting a product to customers to find out if they would buy the product if it were actually available.
D) It refers to a type of market testing in which each store selling a product is used as a mini-city instead of using whole cities.