An investment advisor has recommended a $50,000 portfolio containing assets R, J, and K; $20,000 will be invested in asset R, with an expected annual return of 12 percent; $10,000 will be invested in asset J, with an expected annual return of 18 percent; and $20,000 will be invested in asset K, with an expected annual return of 8 percent. The expected annual return of this portfolio is ___.

a. 15.0%

b. 11.6%

c. 10.8%

d. 14.6%