The difference between the reference rate which banks borrow unsecured funds at and the yield on U.S. treasuries has climbed to a three-month high, and this leads economists to fear a further deterioration in the creditworthiness of financial firms.


A) the reference rate which banks borrow unsecured funds at and the yield on U.S. treasuries has climbed to a three-month high, and this leads economists to fear

B) the reference rate that banks borrow unsecured funds at with the yield on U.S. treasuries has climbed to a three-month high, leading economists to fear

C) the reference rate at which banks borrow unsecured funds and the yield on U.S. treasuries has climbed to a three-month high, leading economists to fear

D) the reference rate at which banks borrow unsecured funds and the yield on U.S. treasuries has climbed to a three-month high, and this leads economists to fear

E) the reference rate which banks borrow unsecured funds and the yield on U.S. treasuries has climbed to a three-month high, which is leading economists to fear
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