Sarah just used $96.21 purchased a Treasury bond. Assume that the yield rate for this bond is j2=4.74% p.a. and the duration of this bond is 2.9 years. Without bond that would result from an increase in yield rate (j2) of 18 basis points. Round your answer to four decimal places. a. 0.2453 b. 0.4906 c. 0.2397 d. 0.4795