Terminal alkyne on reaction with HBr and HBr in presence of peroxides gives respectively

• A

  $\mathrm{RC}\left({\mathrm{Br}}_2\right){\mathrm{CH}}_3,\text{ and }{\mathrm{RCH}}_2\mathrm{CH}{\left(\mathrm{Br}\right)}_2$

• B

  ${\mathrm{RCH}}_2\mathrm{CH}\left({\mathrm{Br}}_2\right)\text{ and }\mathrm{RC}\left({\mathrm{Br}}_2\right){\mathrm{CH}}_3$

• C

  Both gives same product

• D

  both are vicinal dibromides