Which of the following statements expresses the author's weakest certainty about his claim?
A、Therapeutic hypothermia can result in better outcomes for patients with out-of-hospital ventricular fibrillation.
B、Therapeutic hypothermia results in better outcomes for patients with out-of-hospital ventricular fibrillation.
C、Therapeutic hypothermia could result in better outcomes for patients with out-of-hospital ventricular fibrillation.
D、Therapeutic hypothermia will result in better outcomes for patients with out-of-hospital ventricular fibrillation.