D Aged 14 Throws a Brick at a Young Man

D aged 14 throws a brick at a young man (V) playing cricket with his son in a park. The brick causes minor injury. Twenty minutes later, V collapses and dies from a heart attack due to physical shock. How should the judge direct the jury on unlawful and dangerous act manslaughter?

A) The assault caused the death therefore D is guilty.
B) The question of danger is to be assessed according to D's belief.
C) All D needs to do is to commit an intentional offence which causes shock.
D) D must commit an intentional unlawful act constituting a crime which (1) must objectively carry the risk of some harm and (2) must be the cause of death.