Artie's detergent was first developed in the 1960s. since then, artie's has come a long way. the formula has been improved to fight tough stains. now, people all over the world use artie's detergent. college students and stay-at-home moms everywhere count on artie's unique formula when they wash their clothes. but students and homemakers aren't the only people who need this detergent. artie's detergent is the best laundry soap that anyone can buy. buy artie's detergent today!

which of the following is an unsupported claim in the passage?
a.
artie’s detergent has been improved to fight stains.
b.
artie's detergent was first developed in the 1960s.
c.
artie's detergent is used by a variety of people.
d.
artie's detergent is better than all other laundry soaps.