Md. Rule 11-208
Rule 11-208. Response to Petition
(a) Nature of Response. A party served with a petition may file a written response that admits or denies all or any of the facts alleged in the petition. Any allegation not admitted in the response is deemed denied.
(b) Withdrawal of Admission. At any time before disposition, the court, in the interest of justice, may permit an admission in a response to be withdrawn.