如图，四位同学正在讨论某一个化学方程式表示的意义。下列四个化学方程式中，同时符合这四位同学所描述的是请选择ABCD3b'@/t,I9q8_*s2i6[2Q*v4R,f:v,f1L:h'\*k
*v4R,f:v,f1L:h'\*k
A．S+O2SO2*v4R,f:v,f1L:h'\*k
B．2CO+O22CO2*v4R,f:v,f1L:h'\*k
C．2H2+O22H2O*v4R,f:v,f1L:h'\*k
D．CH4+2O2CO2+H2O*v4R,f:v,f1L:h'\*k
*v4R,f:v,f1L:h'\*k
SO2*v4R,f:v,f1L:h'\*k
2CO2*v4R,f:v,f1L:h'\*k
2H2O*v4R,f:v,f1L:h'\*k
CO2+H2O*v4R,f:v,f1L:h'\*k