JoAnn, 64 years old, worked for ABC Company for 30 years. During that time, she made annual contributions to her 401(k). Each of her contributions were excluded from her taxable income. JoAnn's retirement account was $1,000,000 when she retired. $300,000 was from her contributions and the remaining $700,000 was from growth in the value of the plan's investment holdings. JoAnn retired in 2015 and has begun withdrawing money from the account.

What percentage of her 2015 withdrawals must JoAnn treat as ordinary income?

		100%
		70%
		30%
		0%