An ad for Pûr water filters has a photo which shows a woman enjoying a glass of water from her Pûr water filter while her dog is on the counter gnawing on a freshly cooked turkey. The _____ copy under the picture begins with the following statement: "The only thing you'll notice is how great it tastes."

A) Subheadline
B) Endorsement
C) Guarantee
D) Tagline