What Does Young Writer Ethan Watters Mean When He Describes

What does young writer Ethan Watters mean when he describes himself as being a part of an "urban tribe"?

A) Watters is comparing his friend's primitive living conditions to those of pre-modern aboriginal tribes.
B) Watters is describing the postmodern relationships between men and women in urban cities to ritualistic tribal relations.
C) Watters is using the term tribe to describe his network of friends who are distinguished by their cultural affinities and lifestyles.
D) Watters is part Native American, and is describing his plight to maintain his ethnic identity in a postmodern, urban world.
E) All of the above