In which US city do the Ohio, Allegheny and Monongahela rivers join?

In which US city do the Ohio, Allegheny and Monongahela rivers join? Pittsburgh, Pennsylvania: The City of Bridges and Rivers

en In which US city do the Ohio, Allegheny and Monongahela rivers join?

Cincinnati
Pittsburgh
Cleveland
Philadelphia

Pittsburgh is the US city where the Ohio, Allegheny, and Monongahela rivers join together.