According to Marshall and Others, What Is the Current Consensus

According to Marshall and others, what is the current consensus with regard to the use of aversion conditioning with sexual offenders?

A) Aversion conditioning is considered to be among the most effective treatments.
B) Aversion conditioning can have beneficial effects when used with other treatments.
C) Aversion conditioning should no longer be used as a form of treatment.
D) Aversion conditioning interferes with the progress of other therapies and if used should be conducted as a stand-alone treatment.