A thematic map of Russia. Climate regions are labeled 1, 2, 3, 4, and 5. 1 is a highland region. 2 is a semiarid region near the border of Kazakhstan. 3 is most of Eastern Russia and Central Russia. 4 is along the Arctic coast. 5 is Serbia and the subarctic region. Map by e2020

All of the following regions are labeled correctly on the map above, except _.
A.
highlands – 1
B.
semiarid – 2
C.
polar ice cap – 4
D.
subarctic – 5