'Both' and 'as well as' cannot be used together in a sentence, hence (A) and (B) are wrong, (C) can also be eliminated on the same ground; (D) might also seem correct but subject and verb are not in an agreement have as subject is singular and verb are is plural. The words both and and form a team, known as a correlative conjunction and hence is used as singular.Hence (E) is the correct answer.