FCPS & MRCP Part-1 MTF Question | Bronchial asthma

Bronchial asthma is likely to be relieved by:

(a) Stimulation of cholinergic receptors
(b) Stimulation of beta adrenoceptors
(c) Histamin aerosols
(d) Drugs which stabilize mast cell membranes
(e) Glucocorticoids