The correct option is A Portugal
Portuguese were the first Europeans to start trade with India. After the fall of Ottoman Empire and capture of Constantinople in 1453 it became difficult for Europeans to trade with India via land route. The first successful voyage to India was by Vasco da Gama in 1498, when after sailing around the Cape of good hope he arrived in Calicut now in Kerala. Having arrived there, he obtained from Saamoothiri Rajah permission to trade in the city. The navigator was received with traditional hospitality, but an interview with the Saamoothiri (Zamorin) failed to produce any definitive results. Vasco da Gama requested permission to leave a factor behind in charge of the merchandise he could not sell; his request was refused, and the king insisted that Gama should pay customs duty like any other trader, which strained their relations.