Since 1986, when the Department of Labor began to allow investment officers' fees to be based on how the
funds they manage perform, several corporations began paying their investment advisers a small basic fee,
with a contract promising higher fees if the managers perform well.
(A) investment officers’ fees to be based on how the funds they manage perform, several corporations
began
(B) investment officers’ fees to be based on the performance of the funds they manage, several
corporations began
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(C) that fees of investment officers be based on how the funds they manage perform, several corporations
have begun
(D) fees of investment officers to be based on the performance of the funds they manage, several
corporations have begun
(E) that investment officers' fees be based on the performance of the funds they manage, several
corporations began