The correct answer is (a) Kolkata.
The Mitali Express is a passenger train service between Dhaka, the capital of Bangladesh, and Kolkata, the capital of the Indian state of West Bengal. It was inaugurated on 14 January 2023, and is the first direct train service between the two cities. The train runs six days a week, and covers the distance of 514 kilometres in 10 hours and 30 minutes.
The train departs from Dhaka at 10:00 pm on Mondays, Wednesdays, Fridays, and Saturdays, and arrives in Kolkata at 8:30 am the following day. It departs from Kolkata at 10:00 pm on Tuesdays, Thursdays, and Sundays, and arrives in Dhaka at 8:30 am the following day.
The train has two classes of accommodation: AC chair car and AC sleeper. The AC chair car is a comfortable way to travel, with reclining seats and air conditioning. The AC sleeper is a more affordable option, with bunk beds and air conditioning.
The Mitali Express is a convenient and comfortable way to travel between Dhaka and Kolkata. It is a popular choice for both business and leisure travelers.
The other options are incorrect because they are not cities that the Mitali Express connects to.