A、The United Kingdom is a federal republic in which the President, Congress and federal courts share powers reserved to the national government, according to its Constitution.
B、The United Kingdom is a constitutional monarchy in which the sovereign exercises authority in accordance with a written or unwritten constitution.
C、The United Kingdom is a federal semi-presidential republic in which the President is the head of the state and the government exercises the executive power with a multi-party system.
D、The United Kingdom is a presidential representative democratic republic, whereby the President is the head of the state and the government exercises the executive power with a multi-party system. Legislative power is vested in both the government and the National Assembly.