Which selection below explains why the Philadelphia Constitutional Convention of 1787, initially called to amend the Articles of Confederation, resulted in the ultimate creation of a new government? Select one:
A.
amending the Articles of Confederation required a unanimous vote

B.
at the time it was impossible to assemble delegates from all 13 states

C.
a large majority of the states wanted no changes to the Articles

D.
a federal court decision mandated them to do so