S1:What happened, then? S2:Three pirates armed with long knives were noticed on the stern of the tug towing a barge in 01°31.60′N,104°32.20′E,SOUTH CHINA SEA. Q:Where did this piracy incident happen? A. 01°31.60S, 104°32.20′E B. 01°31.60′N, 140°32.20′W C. 01°31.60′N, 104°32.20′E D. 10°31.60′N, 104°32.20′E