A 52-year-old male is complaining of breathing difficulty and left arm pain radiating to the right jaw. Vital signs are BP < 90/60 P = 120, R = 24. The patient should be administered
1. High concentration oxygen and should be positioned with legs raised
2. High concentration oxygen and should be placed in a position of comfort for ease of breathing
3. Low concentration oxygen and should be placed lying down
4. Low concentration oxygen and should be placed in a position of comfort for ease of breathing