One true statement about community rating, a rating method commonly used by health plans, is...

It requires a health plan to set premiums for financing medical care according to the health plan's expected cost of providing medical benefits to a sub-group within the community.

A health plan usually uses community rating to set premiums for large groups.

It tends to lead to greater fluctuations in premium rates than do other rating methods.

A health plan seldom uses community rating to set premiums for large groups.