Why Is the Association Between Television Viewing and Mortality Thought

Why is the association between television viewing and mortality thought to be stronger than the association between overall sitting time and mortality?

A) Television viewing can be more accurately recalled than overall sitting time
B) Television viewing is linked to the clustering of other risk factors for mortality
C) Television viewing is more commonly measured than overall sitting time
D) Television viewing is associated with a lower energy expenditure than overall sitting time per unit of time