In the Nigerian law of torts, for a defendant to successfully raise the complete defense of volenti non fit injuria (voluntary assumption of risk), the defendant must prove that the plaintiff:
AHad mere knowledge of the existence of the risk (sciens).
BFully appreciated the nature and extent of the risk and freely agreed, expressly or impliedly, to incur it.CORRECT
CWas purely negligent and contributed to his own injury.
DExecuted an indemnity agreement in the presence of a legal practitioner.