Which of the Following Statements About Sampling as a Sales

Which of the following statements about sampling as a sales promotion device is True?

A) Sampling is most commonly done through the Internet.
B) The cost per thousand for sampling is much lower than with advertising.
C) The conversion rate with sampling is typically much lower than with other types of sales promotions.
D) Sampling is the only sure way to get a product into the hands of its potential customers.
E) All of the above statements about sampling as a sales promotion device are True.