What were the main objectives of Prince Henry the Navigator?

What were the main objectives of Prince Henry the Navigator?
 
  a. Expanding Christianity, obtaining a monopoly on the slave trade, and establishing colonies in Brazil.
  b. Refining the reputation of his school of maritime studies, expanding trade opportunities for Portugal, obtaining personal wealth.
  c. Expanding trade routes for Europe, enriching the Catholic church, and advancing scientific knowledge.
  d. Weaking the Muslim states in Spain and West Africa, advancing Christianity, expanding trade opportunities for Portugal.
  e. Overthrowing Spain, establishing a colonial foothold in Africa, and monopolizing the spice trade from Asia.