How Did Philip Make an Example of the Protestant Rebels

How did Philip make an example of the Protestant rebels after the Calvinist riots in the Netherlands?

A) He sent the Duke of Alba to suppress the revolt, which ended in the execution of thousands of suspected heretics.
B) He sent his armies back to Spain to gather munitions and build his forces.
C) He published vicious attacks on the rebels in pamphlets and public announcements.
D) He sent religious leaders to preach publicly and condemn the rebels.