Which of the Following Are Necessary to Prove a "Heat

Which of the following are necessary to prove a "heat of passion" defense?

A) There must be adequate provocation.
B) The defendant and victim must have been romantically involved.
C) There must have been no opportunity to cool off.
D) There must be a causal connection between the provocation, the rage, anger, and the fatal act.
E) A, B, and D are correct.