Final answer:
Money Purchase Pension Plans are a type of defined contribution pension plan with mandatory contributions, but they do not guarantee a specific benefit at retirement.
Step-by-step explanation:
Money Purchase Pension Plans are a type of defined contribution pension plan, so statement 1 is true. With this type of plan, contributions are mandatory, which means statement 2 is also true. However, Money Purchase Pension Plans do not guarantee a specific benefit at retirement, so statement 3 is false. Therefore, the correct answer is a) 1 only.