In a Case of Professional Negligence, All of the Following

In a case of professional negligence, all of the following are required to support a claim of res ipsa loquitur except:

A) evidence must exist to show that the defendant acted with malfeasance or intent.
B) the action responsible for the injury was under the control of the defendant.
C) the harm was such that it would not normally occur without someone's negligence.
D) negligence or voluntary risk-taking by the plaintiff did not contribute to the injury.