​Research Has Found That Lung Cancer Increases with Number of Cigarettes

Multiple Choice

​Research has found that lung cancer increases with number of cigarettes smoked. This finding

A) ​indicates a negative relationship between smoking and lung cancer.
B) ​indicates a positive relationship between smoking and lung cancer.
C) ​indicates specific proof that smoking cigarettes causes lung cancer.
D) ​indicates smoking is more likely with personalities prone to cancer.