Question about answer in Developer Certification exam

I tried two times Developer Certification exam and i have a question with these:

we can check all that apply and the question is something like this:

True when configuring a voting member in replica set?

**Will remove a new single voting member
** Using force config to add or remove multiple voting members will result in a valid config and not trigger a rollback due to an incosistent state of RS
** Will add a new single voting member