The first telegraph line in India was laid between
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Kolkata and Agra
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Kolkata and Delhi
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Kolkata and Mumbai
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Delhi and Mumbai
A
Correct answer
Explanation
The first telegraph line in India was established in 1851, connecting Kolkata (then Calcutta) to Agra. This was part of the British colonial communication infrastructure development. The other options are incorrect as Delhi and Mumbai were not part of India's first telegraph connection.