If solid $\text{KClO}_3$ is heated in the absence of air, a mixture containing two chlorine compounds is produced in a mole ratio of $3:1$. Chlorine is the only element whose oxidation number changes during this reaction. What might the oxidation numbers of chlorine be in the two compounds formed?
- A$+3$ and $-1$
- B$+6$ and $+4$
- C$+7$ and $-1$
- D$+7$ and $+1$