Japan is the country farthest to the east in Asia. It is also one of the richest countries in the world. Japan is a small country made of islands. There are four major islands and thousands of smaller ones. If the islands were combined, they would be about the size of California. The islands are really the tops of a great mountain range. That is why much of Japan is covered with hills and rocky mountains. This paragraph is mostly about A. kinds of mountains. B. Japan's geography. C. California's size. D. islands in Asia.