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.