Which of the following is informed consent?
选项：

A:Telling your patient which procedure you will do before you do it.
B:Telling your patient that you will keep his information private.
C:Telling your patient he can have a cookie if he wants and he then agrees to accept the cookie.
D:Telling your patient about a procedure, it's risk, and what he/she must be aware of, and then giving him the chance to agree that the procedure can be done.