According to "Wear and Tear" Theories of Aging

According to "wear and tear" theories of aging,

A) the bodies of people who exercise regularly do not wear out as quickly as the bodies of less physically active people.
B) the muscles of people who exercise vigorously on a regular basis experience tiny tears that stimulate the immune system,which helps maintain overall good health.
C) longevity results when a person does not wear out his or her digestive system by eating too much food.
D) longevity results when the body continues to repair the damage that occurs from a lifetime of exposures and experiences.