Read the following excerpt from a US court opinion:
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in order to ensure constitutional compliance. Rule 11 provides: “A defendant may plead not guilty, guilty or, with the consent of the court, nolo contendere. The court may refuse to accept a plea of guilty, and shall not accept such plea or a plea of nolo con-tendere without first addressing the defendant personally and determining that the plea is made voluntarily with understanding of the nature of the charge and the consequences of the plea. 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. The court shall not enter a judgment upon a plea of guilty or nolo contendere unless it is satisfied that there is a factual basis for the plea.” See Moniz, 938 A.2d at 695 ; State v. Frazar, 822 A.2d 981, 935
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What is the most suitable continuation to the opinion? Your options are:
A. recognizing superior court must conduct an  on the record examination to determine defendants voluntariness and knowledge
B. recognizing that the ultimate question of the voluntariness of consent is one of law
C. recognizing that consent is an exception to the warrant requirement and that voluntariness of consent depends on the totality of the circumstances
D. holding that defendants failure to appeal the voluntariness of a plea constitutes waiver of the issue on subsequent appeal
E. holding that in determining the voluntariness of a waiver of miranda rights a court must evaluate the totality of the circumstances
Reply with [A, B, C, D, E] only.