How Do Bell Bottom Pants (A Fashion) Differ from the Pet

Multiple Choice

How do bell bottom pants (a fashion) differ from the pet rock (a fad) ?

A) Bell bottoms were replaced by straight leg pants, whereas the pet rock simply faded away.
B) Bell bottom pants were significantly more expensive than the pet rock.
C) Pet rocks are contemporary, whereas bell bottoms are a thing of the past.
D) The Millennial generation has embraced the pet rock but not bell bottom pants.
E) The popularity of bell bottoms was short-lived.