8 GCA § 60.40: Pleas Which May be Entered.

(a) The following pleas may be entered by a defendant:

(1) Not guilty.

(2) Not guilty by reason of mental illness, disease or defect.

(3) Guilty.

(4) Nolo contendere.

If a defendant refuses to plead or if the court refuses to accept a plea of guilty, or if a defendant corporation fails to appear, the court shall enter a plea of not guilty.

(b) A defendant may plead nolo contendere only with the consent of the court. Such a plea shall be accepted by the court only after due consideration of the views of the parties and the interest of the public in the effective administration of justice.