This is the correct answer because it's the more logical one. This is because metro subterráneo translates into underground metro system. In fact, there is a metro system in the city of Madrid, the capital of Spain. So this system is the seventh longest metro in the world, with a total length of 293 km. On the other hand, there is a rapid transit system in the City of New York. Finally:
<em>Hay un </em><em>metro</em><em> subterráneo en Madrid y en Nueva York.</em>
