If $D_1=$$$1\mathrm{.}50,g($which is constant$)=2\mathrm{.}1\%,$ and $P_O=$$$56,$ then what is the stock's expected capital gains yield for the coming year?

a$.2\mathrm{.}10\%$

b$.0\mathrm{.}58\%$

c$.2\mathrm{.}68\%$

d$.2\mathrm{.}73\%$

e$.4\mathrm{.}78\%$