The correct answer is: A. 1493.
Reis Magos Fort is a Portuguese fort located in the village of Reis Magos, in the Indian state of Goa. It was built in 1493 by Afonso de Albuquerque, the first Portuguese governor of Goa. The fort was built to protect the Portuguese settlement in Goa from the local Hindu rulers. It is one of the oldest European forts in India.
The fort is a rectangular structure with four bastions. The walls of the fort are made of laterite stone and are about 10 feet thick. The fort has a moat around it. The fort is now in ruins, but it is still an important historical monument.
Option B is incorrect because the fort was built in 1493, not 1490.
Option C is incorrect because the fort was built in 1493, not 1450.
Option D is incorrect because the fort was built in 1493, not 1438.