Option 1 states that the National Anthem was first sung on January 24, 1950 in Allahabad. This is incorrect because the National Anthem was written and composed before 1950, so it could not have been first sung on that date.

Option 2 states that the National Anthem was first sung on January 24, 1950 in Delhi. This is incorrect because, as mentioned earlier, the National Anthem was written and composed before 1950.

Option 3 states that the National Anthem was first sung on December 26, 1942 in Calcutta (Kolkata). This is incorrect because the correct answer is option 4.

Option 4 states that the National Anthem was first sung on December 27, 1911 in Calcutta (Kolkata). This is the correct answer. The National Anthem, "Jana Gana Mana," was written and composed by Rabindranath Tagore and was first sung during the Indian National Congress session held on December 27, 1911 in Calcutta (Kolkata). It was later adopted as the National Anthem of India on January 24, 1950.