Rank the following in order of stability (lowest to highest)

• A

  $\mathrm{IV}<\mathrm{II}<\mathrm{III}<\mathrm{I}$

• B

  $\mathrm{IV}<\mathrm{III}<\mathrm{II}<\mathrm{I}$

• C

  $\mathrm{I}<\mathrm{III}<\mathrm{II}<\mathrm{IV}$

• D

  $\mathrm{IV}<\mathrm{II}=\mathrm{III}<\mathrm{I}$