Use the paragraph below to answer this question. 1Grandma had a beautiful, eight-piece antique canister set on her countertop painted on the sides and top of each piece were pink, blue, and yellow flowers.
2 Written on the front was a word telling what the particular canister was supposed to hold.
3Oatmeal, Barley, Sugar, and Tea were on the big canisters, while Nutmeg, Cinnamon, Pepper, and, Salt were on the small ones.
4I guess people didn't use much flour in those days.

Which sentence in the paragraph above is a run-on?

A. sentence 3.
B. sentence 1.
C. sentence 2.
D. sentence 4.