The correct option is D All of the above
Trade continued through the land route as well as the sea route during the medieval period. Chanthas and Angadies were the major regional trade centers and commodities like paddy, rice, vegetables, betal nut, salt, fish, etc were exchanged. Long distance trade was mainly with Tamil Nadu, Karnataka, Andhra Pradesh, Orissa and constituted rice, chilli, cotton, other cloth materials, silk, and horses. The Arabs, Chinese, Europeans, etc. were the main foreign traders. Black pepper, ginger, cardamom, cinnamon, other spices, coconut, etc. were taken from Kerala while Gold, copper, silver, china clay pottery, silk, etc. were brought to Kerala.