Please help me with this one question.

Which sentence contains a dependent clause?

A. Jefferson and Madison were in one political party, and President John Adams and Treasury Secretary Alexander Hamilton were in another.

B. Along with Thomas Jefferson, James Madison created America’s first political parties.

C. At the end of his presidency, Madison saw the merit of some of Hamilton’s ideas about the American financial system.

D. Although he and Alexander Hamilton worked together on the Federalist Papers, Madison opposed many of Hamilton’s ideas.