How were state constitutions helpful to the writing of the U.S. Constitution? If answered first, and correctly, will mark BRAINLIEST!!!!

A

Most states had learned that having a strong central government was a mistake.

B

The state constitutions contained no guaranteed rights, so the authors of the U.S. Constitution left them out.

C

Small and large states readily agreed on how to set up a national legislative body.

D

The authors of the state constitutions had learned lessons that were useful in writing a new U.S. Constitution.