What simple laboratory test could be performed to distinguish between `1`-pentyne and `2`-pentyne?
A. the addition of `Ag^(+)` in ammonia
B. the addition of `H_(2)SO_(4)` in `Hg^(+2)`
C. the addition of `Br_(2)` in `C Cl_(4)`
D. the addition of `H_(2)` on a `Pt` catalyst.
