Consider a $25-$year $($monthly$-$payment$),7\%,590,000$ mortgage with $4$ polats prepaid interest up front. How much is the pevious mortgage werth in the secondury marter if the proving YTM in that marter lo $6\mathrm{.}55\%$

$($Assume the loan is held to maturity.$)$

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$$93,774$

$$90,000$

$$91,520$

$$105,045$