​By the Time Congress Called for the Annapolis Convention in 1786

Multiple Choice

​By the time Congress called for the Annapolis Convention in 1786, it had become clear that which of the following was a problem under the Articles of Confederation?

A) ​Congress lacked the power to regulate interstate and foreign commerce, making it difficult to obtain commercial concessions from other nations.
B) ​Quarrels among states disrupted interstate commerce and travel.
C) ​Changing the articles of Confederation required a unanimous agreement of the states.
D) ​All of these choices are correct.
E) ​None of these choices are correct.