answer both plz

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What is the Modified duration of a 12 year $90,000 face value bond that pays annual coupons at a rate of 8.250% if the effective annual) yield rate is 3.250%? O a. 9.695% O b. 8.808% O c. 9.094% O d. 10.010% O e. 8.531% The following is a partial amortization table for a loan which will be paid off with n level payments. Find n. Time (t) Kt It PRE OBt 0 210,000.00 1 21,601.44 2 10,361.92 3 33151.44 - ... n 0 a. 8 O b. 6 O c. 7 O d. 9 O e. 10