163.下列何者不是“short RP” regular narrow QRS tachycardia 的原因?
(A) Orthodromic atrioventricular reentrant tachycardia (AVRT)
(B) Typical atrioventricular nodal reentrant tachycardia (AVNRT)
(C) Atrioventricular junctional tachycardia
(D) Permanent junctional reciprocating tachycardia (PJRT)
(E) Atrial tachycardia