Which the most appropriate intervention by the APN?

A 30 year old female stopped by the primary care office near work on the way back from lunch. She experienced a sudden onset of hives on her back and stomach that is progressively spreading. She stated, “my chest feels tight, my tongue feels numb and I am having difficulty breathing. I did have asthma as a child.” Which the most appropriate intervention by the APN?
Prescribe 50mg Benadryl (diphenhydramine) PO now and recheck in 24 hours
Order a stat chest x-ray
Administer nebulized albuterol mixed with saline and repeat PRN
Give epinephrine 1:1,000 intramuscularly immediately