Which one of the following is the characteristic vegetation of regions between the snow line and about 3000 meters above mean sea level of the Himalayan region? [CDS 2000]

• A. Thick forests of birch, fir, spruce and other trees
• B. Forests of oak, deodar, chestnut and maple trees
• C. A few dwarf shrubs
• D. Forests of khair, sandalwood, palas and other trees