When H2S is burned（flared）on a ship，what can you expect to occur ________．
A.All of the H2S will be converted to SO2
B.All of the H2S will be converted to hydrogen and free sulfur
C.Only 80% of the H2S will be converted to SO2 or free sulfur
D.The H2S not converted will not be dangerous
正确答案：C
