H2(g)+S(s)⇌H2S(g),K1;
S(s)+O2(g)⇌SO2(g),K2.
则反应:H2(g)+SO2(g)⇌O2(g)+H2S(g)的平衡常数为( )
A:K1+K2
B:K﹣K2
C:K1×K2
D:K1K2
Which underlined part is different from the others in pronunciation?