The Fourth Rule of Validity Is That

The fourth rule of validity is that:

A) if one premise is negative, then the other premise must also be negative
B) if there is a negative premise, then there must be a negative conclusion, and if there is a negative conclusion, then there must be a negative premise
C) if there are two negative premises, then there must be an affirmative conclusion, and if there is an affirmative conclusion, then both premises must be negative
D) if the major premise is affirmative, then the conclusion must be negative
E) if the minor premise is affirmative, then the conclusion must be negative