In the list of flowers/materials below, which list is not all line flowers:
a. Liatris, gladilous, snapdragons, cattail
b. Bells of Ireland, carnations, branches, snapdragons
c. Liatris, delphinium, gladilous, bells of Ireland
d. Foxglove, branches, lupine, cattail
Answer: b. Bells of Ireland, carnations, branches, snapdragons