What is the expected return for a portfolio consistent of $20\%$ invested in asset A which yields a $-8\%$ return and the remaining portion invested in Asset $B$ which yields a $15\%$ return?

Select one:

A$.7\%$

B$.-2\mathrm{.}8\%$

C$.-7\%$

D$.10\mathrm{.}40\%$

E$.10\%$