Short PR interval followed by QRS >120 ms with a slurred initial deflection representing early ventricular activation via the bundle of Kent suggests:
a) Wolff-Parkinson-White (WPW) syndrome
b) Atrioventricular nodal reentrant tachycardia (AVNRT)
c) Atrioventricular reentrant tachycardia (AVRT)
d) Junctional tachycardia