Read this line from the story

“fortune favor us, dear Sancho,” said Don Quixote, gesturing toward the plain. “she has deemed us worthy to battle and slay these thirty—no, these forty—monstrous giants. sweeping so evil a breed from the face of the earth is a righteous service.”

how does seeing the windmills affect don quixote’s journey?

A. He decides the windmills are a sign that he should find and destroy forty giants.
B. He thinks he must visit the windmills to make his fortune.
C. The sight motivates him to go out and rid the earth of evil.
D. He thinks the windmills are giants that he is meant to do battle with.