The Reaction of 1-Butene with HBr in the Presence of Peroxides

The reaction of 1-butene with HBr in the presence of peroxides yields 1-bromobutane.The mechanism for the reaction involves:

A) attack on the alkene by a Br⁺ ion.
B) attack on the alkene by a H⁺ ion.
C) attack on the alkene by a bromine atom,Br·.
D) attack on the alkene by a hydrogen atom,H·.
E) isomerization of the 2-bromobutane produced initially.