How Did Someone Become a Member of a Church in the Massachusetts

How did someone become a member of a church in the Massachusetts Bay Colony?

A) They became part of whatever church was in their community.
B) A person who already belonged to the church had to provide testimony for anyone new who wanted to join.
C) A new member needed the testimony of neighbors before acceptance in a church.
D) A person had to perform community service before being allowed to join a community church.
E) The church community would vote in order to decide whether to let a new member in.