The Planning Committee has decided in favor of redeveloping the city’s western district and has issued a report that argues for the feasibility of such redevelopment. Lesley Johnston serves as a member of the Planning Committee and has done so from the committee’s inception. Therefore it cannot be true that Johnston opposes redeveloping the western district.
The answer to which of the following questions would most help in evaluating the argument above

A．Did the feasibility report include information compiled by independent consultants rather than by members of the committee

B．Do the committee’s decisions require the unanimous support of its members

C．Has Johnston served on other municipal committees that are not concerned with issues of planning and development

D．Does the committee issue reports at regular intervals or only when a question on development is decided

E．(E) Have other members of the committee served on the committee as long as Johnston has

地租是一种经济剩余，即( )之后余下的那部分。

A．总利润减去税金
B．总收入减去总要素成本
C．税后总利润减去社会平均利润
D．总收益减去生产成本