If a Grocery Store Offers a Five Percent Discount to Senior

Multiple Choice

If a grocery store offers a five percent discount to senior citizens, this is an example of and is_______ .

A) price discrimination; always illegal per se
B) conditional sales; always illegal per se
C) conditional sales; only illegal if the practice substantially lessens competition or tends to create a monopoly
D) price discrimination; only illegal if the practice substantially lessens competition or tends to create a monopoly