At an In-Service, Your Medical Director Asks If Anyone Can

At an in-service, your medical director asks if anyone can tell her the cause of heat cramps. What response would be most appropriate?

A) "They are thought to occur when the patient does not consume enough water and becomes dehydrated."
B) "They are caused when the patient's electrolytes such as salt and calcium are lost and become too low in the body."
C) "They occur when the body can no longer compensate and off-load excess heat."
D) "They occur when blood vessels constrict and decrease blood flow to the affected muscle."