Entertainment City advertised, in its Christmas circular, a portable compact disc player on sale for $45. Sales clerks were informed that they were to attempt to persuade customers interested in the "on-sale" CD player to purchase the higher quality, $115 model. In addition, no commission will be paid on the lower priced CD player. Entertainment City is engaged in the practice of:
a. palming off.
b. legal advertising.
c. sale advertising.
d. puffery.
e. bait-and-switch advertising.
Answer: E