Why Did Ferdinand and Isabella Establish Inquisitions in Spain in 1478

Why did Ferdinand and Isabella establish inquisitions in Spain in 1478?

A) The papacy had put pressure on them to establish religious homogeneity on the Iberian peninsula.
B) The Ottoman Empire had forged an alliance with the king of Granada to regain territories lost in previous centuries as part of the Christian reconquista.
C) Resentment was growing at the success of those Jews who had converted to Christianity.
D) The Cathar heresy had not been completely eliminated in the Spanish Pyrenees.