Which statement about the executive roles of the president of the United States and the queen of England is true?
~The president fills the roles of head of state and head of government.
~The queen fills the roles of head of state and head of government.
~The president fills only the role of head of state.
~The queen is head of government, and the prime minister is head of state.
~The president's role is ceremonial, with Congress serving the roles of head of state and head of government.

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