Question

Which of the following statements is true about the reactivity of 2-methylbutane towards Br2/hv and Cl2/hv?

a. chlorine is more selective than bromine (for halogenation at the 2-carbon as opposed to the 1-, 3-, or 4- carbons)

b. chlorine is more reactive than bromine

c. both bromine and chlorine react with the alkane via cationic mechanisms

d. both bromination and chlorination give optically active product mixtures.

please explain your answers