Question $18(1$ point$)$ Saved $$ Sally has three investments, with the expected returns and portfolio proportions as shown below: Investment Proportion Expected Return Ireasuries $0\mathrm{.}504\%$ Microsaft $0\mathrm{.}307\%$ AT&D $0\mathrm{.}206\%$ What is the expected return for Sally's portfolio? $17\%5\mathrm{.}3\%5\mathrm{.}7\%4\%$