in the passage below, a modern historian describes conditions in the united states in the early 1780s

the states were quick to look to congress for support when british troops were marching across their farmlands and through their towns and cities, but as soon as the danger left, congress' pleas for contributins fell on deaf ears. few marylanders saw the need to finance a war fought in new york, and few virginians were willing to pay troops to defend massachusetts

based on the passage, which conclusion can be drawn about the articles of confederation?
a. each state was willing and eager to act in defense of the other states
b. the national government lacked the power to sign treaties with foreign countries
c. the confederation congress had the power to collect taxes in an emergency
d. it showed that the confederation congress had the power to extend slavery to settlements in the west