Which statements about Article 1, Section 10 of the US Constitution correctly describe the balance of power...

Which statements about Article 1, Section 10 of the US Constitution correctly describe the balance of power between states and the federal government? Choose three correct answers.
1. States cannot enter into treaties with foreign nations, granting more power to the federal government.
2. States can maintain standing armies during peacetime without any restrictions, granting more power to the states.
3. States are allowed to coin money with the consent of Congress, granting more power to the states.
4. States must obtain Congress's consent before making agreements with other states, granting more power to the federal government.
5. States are prohibited from imposing duties on imports or exports without Congress's approval, granting more power to the federal government.