Which of the following pair is/are correctly matched? Steel Plant Collaborating country 1. Durgapur U.K. 2. Bokaro U.S.A 3. Rourkela Germany 4. Bhilai Soviet Union Code:

• A. 1 and 2            
• B. 2 and 3
• C. 3 and 4            
• D. 1, 3, 4