According to His Agreement with the Spanish Crown, What Rewards

According to his agreement with the Spanish crown, what rewards would Columbus receive if he found a water route to Asia?

A) He would be given a noble title and one-half of the revenues of his journey.
B) He would be named viceroy over any territories he discovered and receive one-tenth of the material rewards of the journey.
C) He would be given the right to claim one-tenth of all lands he discovered as his personal property and be free from all taxation.
D) He would be named governor of all lands he discovered and receive the right to claim one-tenth of these lands as his personal property.