Dothan Inc.$\text{'}$s stock has a $25\%$ chance of producing a $30\%$ return, a $50\%$ chance of producing a $1\mathrm{.}5\%$ return, and a $25\%$ chance of producing a $-16\%$ return. What is the firm's expected rate of return?

a$.7\mathrm{.}72\%$

b$.8\mathrm{.}12\%$

c$.8\mathrm{.}55\%$

d$.9\mathrm{.}25\%$

e$.9\mathrm{.}75\%$