In a Portfolio Problem, X1, X2, and X3 Represent the Number

Multiple Choice

In a portfolio problem, X1, X2, and X3 represent the number of shares purchased of stocks 1, 2, and 3, which have selling prices of $15, $47.25, and $110, respectively. The investor has up to $50,000 to invest.
-The expected returns on investment of the three stocks are 6%, 8%, and 11%. An appropriate objective function is:

A) MAX .06X1 +.08X2 +.11X3
B) MAX .06(15) X1 +.08(47.25) X2 +.11(110) X3
C) MAX 15X1 + 47.25X2 +.110X3
D) MAX (1/.06) X1 +.(1/08) X2 + (1/.11) X3