Which of the following is an example of trade advertising?

A. Advertisement of a health drink i.e. ‘Complan' that specifies the benefits of drinking it.

B. The Silk Federation of Asia advertising the importance of silk and the various purposes that it could be used for.

C. Advertisement of Coca-Cola placed in Progressive grocer, a magazine to promote Coca-Cola to food store managers.

D. SouthWest Airlines ads that appears in the newspapers all across the country.

E. Ad for a3 day discount in a restaurant located in a remote area in San Diego which appears in the local newspaper.