An adult patient complains of palpitations and presents with an irregularly irregular pulse

An adult patient complains of palpitations and presents with an irregularly
irregular pulse. Pulse deficit is 20, HR=120/m in, BP 110/70 mm Hg. Which of the
following will be found in this patient?
A. Absent a wave
B. Canon a wave
C. Absently
D. Prominent V wave
Answer. A