All these drugs can be used for parkinsonism except.. nedocromil sod

All these drugs can be used for parkinsonism except:
a- seligiline HCl
b- carbidopa
c- pergolide
d- nedocromil sod.
Drugs used in Parkinson`s disease
Anticholinergic drugs: (Muscarinic Antagonists) Benzatropine, trihexphenidyl, orphenadrine
MAOB inhibitors: Selegiline
COMT inhibitors: Entacapone
Dopamenergic drugs:
* Dopamine precursor: levodopa (+ carbidopa or  Beserazide)
* Releases dopamine: amantadine
* Dopamine agonists: bromocriptine, cabergoline, pergolide, ropinirole