Distinction in pentene-1 and pentyne-1 is done by [CPMT 1996]

• A. \[{{[Ag{{(N{{H}_{3}})}_{2}}]}^{+}}\]
• B. Conc. \[{{H}_{2}}S{{O}_{4}}\]
• C. HCl
• D. \[B{{r}_{2}}\]