Which is the most suitable reagent among the following to distinguish compound (iii) from rest of the compounds?
(i) CH₃−C≡C−CH₃
(ii) CH₃−CH₂−CH₂−CH₃
(iii) CH₃−CH₂−C≡CH
(iv) CH₃−CH=CH₂
A. Bromine in carbon tetrachloride
B. Bromine in acetic acid
C. Alkaline KMnO₄
D. Ammonical silver nitrate