Mary Lou took an $8,000 distribution from her educational savings account and used $6,000 to pay for qualified higher education expenses. The remaining balance of $2,000 was used to purchase clothes. On the date of the distribution, her educational savings account had a $25,000 balance including the $20,000 she had contributed. How much of the $8,000 distribution is tax-free? a.$6,000 b.$7,600 c.$7,625 d.$8,000 e.$0