A young customer who is a novice investor wishes to begin an investment program. He is eligible for his employer's 401(k) plan, to which the employer makes matching contributions, but he does not participate in the plan. Your advice to the customer should be to begin A) by making regular contributions to an income mutual fund B) by taking positions in individual stocks C) by making regular contributions to a growth mutual fund D) making payroll deduction contributions to the employer's 401(k) plan at least to the employer's matching level