Which postal system, shown in this photograph with its distinctive red pillar boxes, is the most widely distributed postal network in the world, operating over 150,000 post offices in India?

• A India Post ✓
• B Royal Mail
• C United States Postal Service
• D China Post

India Post, founded in 1774 by the East India Company, operates the world's largest postal network, with over 89 percent of its offices in rural areas.