165. Because of the business community's uncertainty about the President's position in regard to the issue of the budget deficit, an unanticipated rise in interest rates has occurred.
(A) in regard to the issue of the budget deficit, an unanticipated rise in interest rates has
(B) on the deficit, an unanticipated rise in interest rates has
(C) regarding the budgetary deficit, an unanticipated rise in interest rates have
(D) on the deficit, an unanticipated rise in interest rates have
(E) regarding the deficit, an unanticipated rise in interest rats have

can some one explain why b) could be accepted as an answer despite excluding "budget", completely altering the intent of the sentence.