Tobacco Smoke Is a Much Deadlier Carcinogen and Triggers a Broader

Multiple Choice

Tobacco smoke is a much deadlier carcinogen and triggers a broader variety of cancers than previously believed. A new study provides definitive evidence that secondhand smoke increases the risk of those exposed by 20%. Also, the study firmly links smoking to stomach, liver, cervical, and kidney cancer, as well as to myeloid leukemia. Such links were previously suspected but not proved. Thomas Maugh II, "Smoking Goes from Bad to Worse"

A) Argument; conclusion: The study firmly links ... myeloid leukemia.
B) Argument; conclusion: Such links were previously suspected but not proved.
C) Argument; conclusion: Tobacco smoke is a much deadlier ... believed.
D) Argument; conclusion: A new study provides ... those exposed by 20%.
E) Nonargument.