Investment decisions:The employee credit union is planning the allocation of funds for the coming year. The credit union makes 4 types of loans to its members. In addition, the credit union invests in risk-free securities to stabilize income. The various revenue-producing investments, together with annual rates of returns, are as follows:

Type of loan/investment Annual rate of return (%) Auto loan 8 Furniture loans 10 Other secured loans 11 Signature loans 12 Risk-free securities 9