An Ad for Trice Antacid Shows a Patron at a Restaurant

Multiple Choice

An ad for Trice antacid shows a patron at a restaurant asking for Trice to alleviate heartburn. The waiter points to a bowl that is filled with a mix of Oxyline, Polar, Trice, and other antacids. The waiter says that all antacids are the same and the patron then explains to him that Trice is the only antacid that has vitamin E. In this scenario, Trice is using:

A) one-sided advertising.
B) two-sided advertising.
C) comparative advertising.
D) verbal appeals.
E) refutation.