How do you understand "the spirit of Zorahayda... was oftenseen by moonlight..."?

How do you understand "the spirit of Zorahayda... was oftenseen by moonlight..."?

A. Moonlight often saw the spirit of Zorahayda.

B. People could see the spirit of Zorahayda when there was the moon in the sky.

C. The spirit of Zorahayda could see moonlight.

D. There was moonlight in the spirit of Zorahayda.