You are given a statement written in Malayalam. Choose the most logical word from the given 4 options which can be used to replace the <MASK> token in the statement. Output the word from the correct option .

Statement: |From the northern Caucasus and the north coast of the Caspian Sea east through <MASK> to the north coast of the Aral Sea and Lake Balkhash, though the Zaysan Valley to Sinkiang in China and southern Mongolia. Also in northern and eastern Iran, Afghanistan and western Pakistan.

Option A: Romania

Option B: Egypt

Option C: Tajikistan

Option D: Kazakhstan
Kazakhstan