The correct order of the thermal stability of hydrogen halides (H-X) is 

• A

  $\mathrm{HI}>\mathrm{HBr}>\mathrm{HCl}>\mathrm{HF}$

• B

  $\mathrm{HF}>\mathrm{HCl}>\mathrm{HBr}>\mathrm{HI}$

• C

  $\mathrm{HCl}<\mathrm{HF}<\mathrm{HBr}<\mathrm{HI}$

• D

  $\mathrm{HI}>\mathrm{HCl}>\mathrm{HF}>\mathrm{HBr}$