Which one of the following mountains lies in between Caspian Sea and Black Sea?

The mountain range that lies between the Black and Caspian Seas is called the Caucasus Mountain Range, or just the Caucasus Mountains. The great historic barrier of the Caucasus Mountains rises up across the wide isthmus separating the Black and Caspian seas in the region where Europe and Asia converge. Trending generally from northwest to southeast, the mountains consist of two ranges-the Greater Caucasus (Russian: Bolshoy Kavkaz) in the north and the Lesser Caucasus (Maly Kavkaz) in the south. Mount Elbrus in the Greater Caucasus range, at 18,510 feet ( 5,642 metres), is the highest peak.