Which one of the following ports handled the north Indian trade during the Gupta period?

1. The question asks about the major port handling north Indian trade during the Gupta period. 2. Tamralipti (modern Tamluk in West Bengal) was a major ancient port located on the Bay of Bengal coast. 3. During the Gupta period, Tamralipti served as the principal seaport for trade originating from the Ganges valley (north India) and connecting India with Southeast Asia and China. Accounts of Chinese pilgrims like Fa Hien (Faxian) mention Tamralipti as a thriving port. 4. Broach (Bharuch) was a major port on the west coast (Gujarat), primarily handling trade with the West (Roman Empire, Persia). 5. Kalyan, near modern Mumbai, was also a significant west coast port. 6. Cambray (Khambat) was another important port in Gujarat on the west coast. 7. For north Indian trade, especially towards the east, Tamralipti was the most important port during the Gupta period.