<prompt> Which of the follow ing is cause of RBBB ?It can occur in a normal personPulmonary embolismCorpulmonaleAll of the above  <response>: Ans. is 4d i.e.. All of the above Causes of RBBBNormal physiologicalPulmonary embolismcorpulmonalePulmonary artery hypertensionASDRheumatic heart disease 