With regard to a qualified plan, which of the following statements is true? A. Only a sole proprietor or a partner can establish a qualified plan. B. An employee must be allowed to participate in the plan if the employee is at least age 21, but not over age 59 1/2, and has at least 1 year of service (2 years if the plan provides that, after not more than 2 years of service, the employee has a nonforfeitable right to all of his or her accrued benefits). C. For qualified plan purposes, a self-employed individual is both an employer and an employee. As an employer, the individual can usually deduct, subject to limits, contributions made to a qualified plan, excluding those made for his or her own retirement. D. You can choose not to have tax withheld on long-term periodic distributions and required distributions