What Is the Viewpoint Taken in the Exchange Theory of Aging

What is the viewpoint taken in the exchange theory of aging?

A) As people age, they gradually withdraw from social participation and are relieved of social responsibility.
B) The extent to which an individual remains engaged in meaningful activity determines the quality of life in old age.
C) Norms of reciprocity govern interaction and elderly people engage in meaningful social interactions as long as social interactions are mutually beneficial to all parties.
D) Older people form subcultures in order to interact with others with similar backgrounds, experiences, attitudes, values, beliefs, and lifestyles.