At the Scene of an Industrial Accident, You Are Presented

At the scene of an industrial accident, you are presented with a male patient who was exposed to a powerful pesticide in powder form. The patient states that he was moving sacks of the pesticide when one broke open. In the process, his face and arms were covered with the powder. At the present time, he is complaining of difficulty breathing and burning of his skin on his face and arms. You note that some of the pesticide still remains on these areas of the body. Your first action in caring for this patient would be to:

A) apply oxygen through a nonrebreather mask.
B) brush off the remaining pesticide.
C) flush the pesticide with copious amounts of water.
D) obtain vital signs and medical history.