1. The following are excerpts from advertisements printed in various magazines. Which, if any, are warranties?

a. Chrysler "Town and Country" Minivan The advertisement says "One test drive and even the most discerning luxury car owners realize they don't have to compromise anything to own a vehicle that's startlingly practical. Least of all, their standards." The advertisement mentions that "BMW's, Mercedes, Acura's, Jaguar's, Lincoln's, Cadillac's... are being traded in for the Chrysler... Minivan." (National Geographic Magazine, March 1994)

b. General Motors "Sonoma Highrider" truck "The new Highrider package is designed to handle the kind of trouble you'll find off-road... You sit high. Look good. Ride smooth." (National Geographic Magazine, March 1994)

c. Ford "Escort" "You can explain Escort's popularity in one word... Value... (also)... Because your security is our priority." (National Geographic Magazine, March 1994)

d. Toyota "Sienna" "Now you can sleep at night. With its five-star rating in government crash tests and a "Best Pick" by the Insurance Institute for Highway Safety, the Toyota Sienna gives you one less thing to worry about. So now you are down to only 999,999." (People Magazine, May 1999)