Which of the Following Was an Incentive for the Portuguese

Which of the following was an incentive for the Portuguese to find a direct sea route to Asia?

A) To circumvent the Muslim and Venetian monopolies on the trade in Eastern goods
B) To establish colonies for their growing population and create markets for their goods
C) To continue the Crusades in Asia and Pacific Oceania
D) To establish a base on the eastern end of the Silk Road