What language do they speak in Montenegro?

Serbian (Serbian Cyrillic:, Serbian Latin: Srpski, ), the South Slavic language, spoken chiefly in Serbia, Bosnia and Herzegovina, Montenegro, Croatia, and in the Serbian diaspora

Montenegrin, the name used for the Serbian language as spoken by Montenegrins; it also refers to an incipient standardized form of the Shtokavian dialect of Serbo-Croatian used as the official language of Montenegro

Croatian, the South Slavic language which is used primarily in Croatia, by Croats in Bosnia and Herzegovina, by Croatian minorities in some neighbouring countries, in the Italian region of Molise, and parts of the Croatian diaspora

Albanian, the unique Indo-European language spoken by nearly 6 million people, primarily in Albania and Kosovo but also in other areas of the Balkans in which there is an Albanian population, including western Macedonia, Montenegro

Bosnian, the South Slavic language spoken primarily in Bosnia and Herzegovina and in the region of Sandžak in Serbia, Montenegro, Kosovo and Macedonia although it is also spoken in various places throughout the world, as many speakers