When Elements from a Group Exhibit More Than One Oxidation

Multiple Choice

When elements from a group exhibit more than one oxidation state,

A) the higher oxidation state is more important as one goes down a group.
B) the lower oxidation state is more important as one goes down a group.
C) both oxidation states are equally important throughout the group.
D) the oxidation state will be affected by the elements on either side of it in the period.
E) None of these choices are correct.