You are treating a construction worker who has been assembling large, iron girders with a torch. It is very warm where you are treating the patient. Suddenly, he experiences a severe cramp to his shoulder region. This has probably occurred because the patient:

A) may have dislocated his shoulder during the activity.
B) lost both water and sodium in his sweat.
C) is probably not strong enough to maneuver the iron girders.
D) was not sweating enough to keep him cool.

Answer: B