During 2019, Marcia, who is single and is covered under a pension plan at work, contributes $6,000 into a Roth IRA. If her AGI is $21,000, which of the following is true?

	A.	She must withdraw all of the contribution immediately since she is covered under a plan at work.
	B.	None of the contribution is deductible.
	C.	Only 60% of the contribution is deductible since her AGI exceeds $64,000 by $4,000 and her maximum contribution is phased out by 40%.
	D.	All of the contribution is deductible.