All these drugs are anti-cholinergic except.. Dobutamin

publisher :NIL NAM -May 23, 2017

All these drugs are anti-cholinergic except:
a- ipratropium.
b- Atropine sulphate.
c- Benzatropine methylate.
d- Dobutamin.***

Five ml of a colored solution has an absorbance of 0.500. The absorbance of 10ml of the same colored solution will be.. 0.500