【单选题】

We are looking for a PrincipalEconomist，who as well as advising managers and boardmembers on environmental economic policy matters，will develop policy relating to costbenefit analysis at the upcoming review and beyonD、

A、The PrincipalEconomist will become a board member．
B、The PrincipalEconomist will deal with environmental matters．
C、The PrincipalEconomist’s major responsibility is to make certain policy．