D Supplies a Class a Drug to V, Prepares a Syringe

D supplies a class A drug to V, prepares a syringe, and hands it to V for immediate injection. V injects himself. Which of the following correctly states the law:

A) D has committed two unlawful acts: possession of a Class A drug and administration of it under s23 OAPA 1861 both of which are inherently dangerous. He is therefore guilty of unlawful act manslaughter.
B) V's self-injection is foreseeable and does not therefore break the chain of causation. D is guilty of manslaughter.
C) Both D and V were accomplices in an unlawful enterprise and therefore D is guilty of manslaughter.
D) D did not commit an unlawful act under s23 because he did not administer the drug or cause it to be administered or taken by V. D is not guilty of unlawful act manslaughter.