Wells Fargo issues a CMBS. The mortgage poolconsists of interest only loans, with a totalloan amount of $15 million. Assume the mortgage rate is 11%, the mortgages areannually compounded, and the loan maturity is 4 years. There are three tranches in the CMBS: 1.Tranche A, with anamount of$10 millionat 8% coupon rate, 2. Tranche B, with $3 million at 10% coupon rate, and 3. the residual tranche, with $2 million. Thematurity of the MBS securities is4 years. Suppose the value of the properties in the mortgage pool at the end of 4th year is worthy of only 70% of the originalloanamount indicated above. What is the investor return for Tranche B for the 4 year period?

-8.77%

-8.47%

-7.11%

-5.98%

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