Which Interpretation of Correlational Study Results Is Acceptable as Worded

Which interpretation of correlational study results is acceptable as worded?

A) The study proved that cigarette smoking causes lung cancer. Financial incentives must be offered by insurance companies to all persons who cease smoking.
B) Findings suggest that antihypertensives influence both length and quality of life and that their use is more beneficial than formerly realized.
C) The positive correlation between owning a dog who demands to be walked daily and the owner's cardiovascular health indicates that all people should own dogs.
D) Results imply that all humans who use amphetamines will have shortened life spans, and patient teaching needs to include this vital information.