Porter Investments needs to develop an investment portfolio for Mrs. Singh from the following list of possible investments

Mrs. Singh has a total of $60,000 to invest. The following conditions must be met:
(1) If investment F is chosen, then investment G must also be part of the portfolio,
(2) at least four investments should be chosen, and
(3) of investments A and B, exactly one must be included.
Formulate and solve this problem using LP software to determine which stocks should be included in Mrs. Singh's portfolio.