After meeting with his high school counselor several times, Tristan shares that over the past 4 months, he has been eating an amount of food that is larger than what most students his age would eat in a similar period of time under similar circumstances and feeling like he can't control what or how much he eats. He feels as if he does not look how a high school student should look to be attractive and explains that he has used laxatives and multiple daily visits to the gym to reach his goal. Given the school counselor's knowledge of the DSM-5 and diagnosing criteria, what is true?

A:The school counselor has enough information to formally diagnose him with an eating disorder.

B:The school counselor does not have enough information to formally diagnose him with an eating disorder but can put a long-term treatment plan into place immediately.

C:The school counselor has enough information to call Tristan's parents and guardians and tell them that he meets the criteria for eating disorder diagnosis and should seek support for an official diagnosis.

D:The school counselor has enough information to contact Tristan's parents or guardians to provide referral information for a clinical mental health counselor to formally assess Tristan's situation.