Open$-$end Fund A has $169$ shares of ATT valued at $$37$ each and $32$ shares of Toro valued at $$77$ each. Closed$-$end Fund B has $77$ shares of ATT and $74$ shares of Toro. Both funds have $1,000$ shares outstanding.

a$.$ What is the NAV of each fund using these prices? $($Round your answers to $3$ decimal places. $($e$.$g$.,32\mathrm{.}161))$

b$.$ If the price of ATT stock increases to $$38\mathrm{.}25$ and the price of Toro stock declines to $$74\mathrm{.}292,$ how does that impact the NAV of both funds? $($Negative amounts should be indicated by a minus sign. Do not round intermediate calculations. Round your answers to $2$ decimal places. $($e$.$g$.,32\mathrm{.}16))$

c$.$ Assume that another $157$ shares of ATT valued at $$37$ are added to Fund A$.$ The funds needed to buy the new shares are obtained by selling $666$ more shares in Fund A$.$ What is the effect on Fund A$$s NAV if the prices remain unchanged from the original prices?