单项选择题

A.COD 12000mg/L、BOD5 3000mg/L、氨氮500mg/L
B.COD 30000mg/L、BOD5 16000mg/L、氨氮400mg/L
C.COD 1000mg/L、BOD5 200mg/L、氨氮1000mg/L
D.COD 60000mg/L、BOD5 36000mg/L、氨氮350mg/L