Why did the framers agree to add a bill of rights to the constitution after it was ratified?

A.Federalists would not support the U.S Constitution without the guarantee of a list of rights.

B. Federalist convinced the anti-federalists that it would be easier to ratify with a Bill of rights.

C. Anti-federalists convinced the federalists that it would be harder to ratify with a Bill of rights.

D. Anti-federalists would not support the u.s constitution without the guarantee of a list of rights.