A Car Dealer Puts an Ad in the Paper That

A car dealer puts an ad in the paper that he is selling luxury cars for $20,000.When Stan comes in to see the car,though,the dealer tells him that they already sold that car but have a similar one with more options for $30,000.This is an example of the

A) foot-in-the-door phenomenon.
B) lowball technique.
C) that's not all effect.
D) door-in-the-face phenomenon.