Identify the reagent from the following list which can easily distinguish between 1-butyne and 2-butyne

Question

$\begin{array}{1 1}(a)\;\text{Bromine},CCl_4\\(b)\;H_2, \text{Lindlar catalyst}\\(c)\;\text{Dilute }H_2SO_4\\(d)\;\text{Ammonical }Cu_2Cl_2\text{ solution}\end{array}$