Home Furniture store advertises bedroom suites at a $$Special Low Price of $$599.$ When a consumer offers to buy one of the suites, the salesperson says that they are all sold out and no more are obtainable, but that the store has other bedroom suites available for as low as $$2,599.$ This is

a$.$ bait$-$and$-$switch advertising.

b$.$ puffery.

c$.$ counter advertising.

d$.$ a legitimate marketing ploy.