Attorney Sammy Sleaze has a law practice. He has an operating account and a trust account. He needs money so he decides to take money from the trust account and put it in his operating account. Can he do this? 

Yes, if he writes a note saying he is taking the money from the trust account. 

Yes, because this is commingling of funds. 

Yes, if the money in the trust account is a refundable retainer. 

Yes, if the money in the trust account is a nonrefundable retainer.