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The question asks you to match each steel mill (List-I) with the corresponding state (List-II). The correct answer is option 3, which states A-B-C-D as 3-4-2-1.
In option 1: The first match, A-B, correctly pairs Kalinganagar with West Bengal. However, the second match, C-D, incorrectly pairs Salem with Durgapur.
In option 2: The first match, A-B, correctly pairs Kalinganagar with West Bengal. The second match, C-D, correctly pairs Salem with Tamil Nadu. However, the third match, B-C, incorrectly pairs Vijayanagar with Odisha.
In option 4: The first match, A-B, correctly pairs Kalinganagar with West Bengal. The second match, C-D, incorrectly pairs Salem with Tamil Nadu. The third match, B-C, incorrectly pairs Vijayanagar with Karnataka.
Therefore, option 3 is the correct answer as it matches Kalinganagar with West Bengal, Vijayanagar with Odisha, Salem with Tamil Nadu, and Durgapur with Karnataka.
Note: If any of the options are incorrect, it is important to provide the correct answer and mention that the provided answer is incorrect. In