Which of the Following Is Scientific Evidence That Warming Up

Which of the following is scientific evidence that warming up prior to a workout is beneficial?

A) Warm muscles will cause an increase in red blood cell production.
B) Warm muscles will cause oxygen to be released more efficiently from hemoglobin.
C) Warming up will cause an increase in the partial pressure of oxygen in the alveoli.
D) Warming up will increase the diffusion of carbon dioxide into the lungs.
E) Decrease in breathing rate is a benefit of warming up.