Regarding the Health Hazards of Exposure to Secondhand Smoke,most Experts

Regarding the health hazards of exposure to secondhand smoke,most experts agree that:

A) the dangers are not nearly as great as popularly believed.
B) nonsmokers who are regularly exposed to passive smoke are more likely to die from cardiovascular disease and cancer than those who live with nonsmokers.
C) secondhand smoke is unhealthy,although it has a much lower concentration of carcinogens than smoke that is directly inhaled.
D) the hazards of environmental tobacco smoke are more than offset by eating a balanced diet and engaging in other healthy lifestyle behaviors.