Suppose the required retum on a stock is $11\mathrm{.}5\%.$ The beta of the stock, estimated based on monthly returns in the past five years, is $1\mathrm{.}15.$ If risk$-$free rate is $4\mathrm{.}3\%,$ how much is the market risk premium?a$.6\mathrm{.}35\%$b$.6\mathrm{.}17\%$c$.6\mathrm{.}58\%$d$\mathrm{.}6\mathrm{.}26\%$