What is the step by step to caluculate this? Given the following information, what is the expected return on a portfolio that is invested $30$ percent in both Stocks

A and $C,$ and $40$ percent in Stock B$?$

Multiple Choice

$9\mathrm{.}2$ percent

$11\mathrm{.}3$ percent

$10\mathrm{.}69$ percent

$8\mathrm{.}78$ percent

$9\mathrm{.}44$ percent