Betablockers – which is the odd one out?…………………(letter)

(a)        Tenormin                      Generic Name              (G.N)_____________

(b)        Propranolol                  Proprietary Name         (P.N) _____________

(c)        Metoprolol                   Proprietary Name         (P.N) _____________

(d)        Betamethasone Proprietary Name         (P.N)_____________