Hi, I received 529 distribution in 2018, but all expenses were for my daughter's college tuition and room and board. I did go ahead and make the earning not taxable for me on tax return. But recently I received an IRS notice saying I should attach a worksheet with my return if all the distributions from 529 were for college expenses. My question is that what worksheet should I attach? and why turbotax didnt include that worksheet while I'm efiling my return? Can someone help me? Thank you!