Answer:
Keogh plan
Step-by-step explanation:
Since he no longer has the benefit of a corporate retirement system. He should consider investing in a Keogh plan. This is a tax-deferred pension plan that is available to all self-employed individuals and small unincorporated businesses for retirement purposes. This plan allows workers to contribute pre-tax earnings to retirement funds, where those contributions are tax-deductible. Therefore it would be the best option for Christian, seeing as he is now opening his small business.