What Is the Difference Between Hostile and Instrumental Aggression

What is the difference between hostile and instrumental aggression?

A) Hostile aggression has the motivation to harm, whereas instrumental aggression has the motivation to harm in order to obtain something of value
B) Hostile aggression includes very severe acts that result in physical injury (biting, punching) , whereas instrumental aggression includes more minor, non-injurious acts (hair pulling, taunting)
C) Hostile aggression involves a confrontation, whereas instrumental aggression includes acts from an unknown origin
D) Hostile aggression only takes place during games, instrumental aggression only takes place during practice