Which of the Following Accounts for the Anti-Markovnikov Regiochemistry of the Reaction

Multiple Choice

Which of the following accounts for the anti-Markovnikov regiochemistry of the reaction of an alkene with HBr in the presence of peroxides?

A) the alkene reacts with HBr to give a carbocation
B) the alkene reacts with a bromine atom to give a radical
C) the alkene reacts with a hydrogen atom to give a radical
D) the alkene reacts with peroxide to five an allylic radical