I think:
<span> C) Regularly check Publisher's 'Rejected' Tab <span>D) Enable email notifications for failed messages under Preferences</span></span>
But I am not sure.
The answer is true and i believe it is best to put it at the 4 intersecting points<span />
C. When listing items that have an order of priority.
Explanation:
There are a lot of ways to list items such as alphabets and Roman numerals.
And the all have their respective reasons.
When numbering in order of priority, it is more appropriate to use numbers instead of alphabets and Roman numerals.