将硫化氢通入不同浓度的硝酸溶液中,发生下列反应:①3H2S+2HNO33S↓+
2NO↑+4H2O;②H2S+2HNO33S↓+2NO2↑+2H2O;③4H2S+2HNO34S↓+NH4N
+3H2O;④5H2S+2HNO35S↓+2N2↑+6H2O。结合所学有关硝酸的知识,判断硝酸浓度由大到小的顺序,正确的是 ( )
A.①>②>③>④ | B.②>①>④>③ | C.②>①>③>④ | D.④>③>②>① |