$15.$ Within the context of the Capital Asset Pricing Model $($CAPM$),$ assume:

Equity market risk premium $=4\mathrm{.}8\%$

Current risk free rate $=1\mathrm{.}8\%$

Historical average of the equity market return $=10\mathrm{.}5\%$

Beta of security $=1\mathrm{.}9$

Additional Country Risk Premium $=1\mathrm{.}3\%$

What would most likely be the cost of equity of this security

A$)12\mathrm{.}2,$ B$)11\mathrm{.}5,$ C$)10\mathrm{.}9,$ D$)6\mathrm{.}1$