If the sentence below is written in active voice, note it. If the sentence is written in passive voice, rewrite it in active voice.
A. The plaintiff filed the complaint in the U.S. District Court for the Northern District of Illinois.
B. The complaint was filed by the plaintiff in the U.S. District Court for the Northern District of Illinois.
C. The U.S. District Court for the Northern District of Illinois filed the complaint by the plaintiff.
D. Filed by the plaintiff, the complaint was in the U.S. District Court for the Northern District of Illinois.