For a stock, the D$1=$ $$1\mathrm{.}50.$ Its dividends are expected to grow at a constant rate g $=5\mathrm{.}5\%.$ If the current market price for the stock P$0=$ $$42,$ what is the stock$$s required rate of return? $($Note: D$1$is the expected dividend next year.$)12\mathrm{.}85\%9\mathrm{.}07\%8\mathrm{.}34\%10\mathrm{.}76\%15\mathrm{.}50\%11\mathrm{.}75\%9\mathrm{.}88\%14\mathrm{.}09\%$