Answer- B. SteroidsMild symptoms such as pruritus and uicaria can be controlled by administration of 0.3 to 0.5 mL of l: 1000 (l mg/mL) epinephrine SC or IM.An IV infusion should be initiated to provide a route for administration of 2.5 mL epinephrine, diluted l: 10,000, at 5- to l0-min intervals, volume expanders such as normal saline, and vasopressor agents such as dopamine if intractable hypotension occurs.Oxygen alone a nasal catheter or with nebulized albuterol may be helpful, but either endotracheal intubation or a tracheostomy is mandatory for oxygen delivery if progressive hypoxia develops.