The Pacific yew is an evergreen tree that grows in the Pacific Northwest. The Pacific yew has a fleshy, poisonous fruit. Recently, taxol, a substance found in the bark of the Pacific yew, was discovered to be a promising new anticancer drug.

Question

$(A) \text{Taxol is poisonous when taken by healthy people.} \\ (B) \text{ Taxol has cured people from various diseases.} \\(C) \text{People should not eat the fruit of the Pacific yew.} \\ (D) \text{The Pacific yew was considered worthless until taxol was discovered.}$