Why is the statement correct?

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5. Jacques works for Hiral Industries, which sponsors a 401(k) plan with a 50% match and a 2 to 6 graded vesting schedule. Jacques defers $30,000 over the last three years and has received $15,000 in matching contributions over that same time. If he leaves today after three years with Hiral, and the balance in the account is $60,000, then he will forfeit $12,000 of the match and associated earnings. Ca. True b. False