I just took the test, the answer is A. Trust me :)
Answer:
well the southern states had to have income to fund the war, cotton, but the northern states had higher prices. hopes this helps
Explanation:
"We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution<span> for the United States of America.</span>
I think that you just answered your own question in the question you asked.