बिहार की परिवहन प्रणाली से संबंधित विवरण (स्तंभ I) को उनके संबंधित विषयों (स्तंभ II) से सुमेलित कीजिए। स्तंभ I1. बिहार की अर्थव्यवस्था की रीढ़ 2. राज्य में परिवहन का प्रमुख साधन3. राज्य की राजधानी में भीड़भाड़ कम करने का उद्देश्य4. राज्य का प्राथमिक विमानन केंद्र स्तंभ II A. पटना मेट्रो फेज 1 B. जय प्रकाश नारायण अंतर्राष्ट्रीय हवाई अड्डा C. परिवहन क्षेत्र D. सड़क नेटवर्क

Consider the following statements regarding Bihar's transportation network: I. The transport sector contributes significantly to Bihar's GSDP growth, driven by state and rural road infrastructure development. II. The Digha-Sonpur Rail-Road Bridge is a major dual-deck bridge over the River Ganga connecting Patna and Sonpur. III. Inland Waterways development is expanding in Bihar along National Waterway 1. IV. National Waterway 1 (NW-1) runs along the River Ganga from Prayagraj to Haldia, featuring key terminals at Gaighat (Patna) and other locations in Bihar. Which of the statements given above are correct?

Consider the following statements regarding Bihar's transportation network and infrastructure: I. The Indo-Nepal Border Road is a project designed to ease travel and enhance security along the border. II. National Highways (NH) in Bihar connect the state to other states and are maintained by central/state PWD and NHAI. III. Purnia Airport is being developed to enhance regional connectivity in Bihar under the UDAN scheme. IV. Under the civil aviation sector, UDAN stands for Ude Desh Ka Aam Naagrik. Which of the statements given above are correct?