You would like to invest $30,000 and have a portfolio expected return of 16 percent. You are considering two securities, X and Y. X has an expected return of 10 percent and Y has an expected return of 20 percent. How much should you invest in stock X if you invest the balance in stock Y to achieve the 16 percent portfolio return?

a) $18,000

b) $10,000

c) $12,000

d) $ 20,000