A patient's spouse, who is a doctor, states that an EMT is negligent because he put his wife on low-concentration oxygen when she should have gotten high-concentration. The patient was having chest pain that was later determined to be caused by anxiety. She was released from the emergency department later in the day. Which one of the following statements is true?

A) Negligence can be proven because the protocol states high-concentration oxygen should be given.
B) Negligence cannot be proven since the EMT responded to the call and did render care.
C) The EMT cannot be proven negligent because that patient suffered no harm or damage.
D) Negligence is a distinct possibility since the patient was transported and treated in the emergency department.

C