The 'Golden Quadrilateral' which connects Delhi, Mumbai, Chennai and Kolkata passes through

• A. Amritsar-Ahmedabad-Pune-Patna
• B. Jaipur-Porbandar-Hyderabad-Varanasi
• C. Vadodara-Pune-Visakhapatnam-Varanasi
• D. Nagpur-Bhopal-Surat-Amritsar