Question

Ryan wrote the sentence shown below.

“Through any three noncollinear points, there is exactly one plane.“

Which of these statements is true about what Ryan wrote?

It is a postulate because it is used to prove other statements.
It is a theorem because it is assumed true without any proof.
It is a postulate because it is a true statement which can be proved.
It is a theorem because it is a true statement which can be proved.