According to D N Majumdar and T N Madan, which of the following classification related totribal zone demarcated in India?

• A. north-north eastern zone, middle zone, south zone, west zone
• B. himalayan region, middle india, western india, south india, the islands
• C. north-eastern india, middle india, southern india, north-western himalayas, andaman and nicobar islands zone
• D. north-north eastern, the central or the middle, southern zone