0.1mol/L的K₂S溶液中，有关粒子的浓度大小关系正确的是

A．c(K⁺)+c(H⁺)=c(S^2—)+c(HS^—)+c(OH^—)

B．c(K⁺)+ c(S^2—) = 0.3mol/L

C．c(K⁺)=c(S^2—)+c(HS^—)+c(H₂S)

D．c(OH^-)=c(H⁺)+c(HS^—)+2c(H₂S)

— Mark, please don't play basketball on the road. It's very dangerous.

— _____. I am going home at once. [ ]

A. Have a great time

B. Sorry, I won't do that

C. I'd like to

D. OK, with pleasure