Which effect did the Reconquista have?

A. expulsion of non-Christians from Spain

B. revival of trade between Europeans and distant lands

C. defense of Constantinople against invasion

D. persecution and slaughter of heretic Christians

The correct answer is (A). Reconquista is the period from 780 to 1492. in the history of the Iberian Peninsula that started with the Battle of Covadonga, led by the nobleman Pelagius, and resulted in expulsion of non-Christians from Spain and establishment of independent Christian Kingdom of Asturias.

I am pretty sure the answer is A.