Which is the best description of the main weakness of the articles of confederation in relation to the american revolution?

a) because the articles of confederation gave the federal government no way to force the states to supply troops or funds, washington's army was often without supplies or food.
b) because the articles of confederation guaranteed equal rights for native americans, washington's army gained thousands of indian warriors as allies, a fact that led to his victory at the battle of yorktown.
c) because the articles of confederation created a strong central government, the thirteen colonies were unified against great britain and had little problem raising troops and providing adequate supplies for washington's army.
d) because the articles of confederation gave the states too much power, each state was trying to negotiate individually with great britain and several states reached compromises with great britain and hurt the american war effort.