<prompt> Cause of central cyanosis include all of the following, ExceptChronic AsthmaCongenital Pulmonary stenosisCongestive hea failureAlveolar hypoventilation  <response>: Answer is C Congestive hea failure: Congestive Hea Failure is a cause for Peripheral cyanosis and not central cyanosis Cyanosis when present in Asthma, pulmonic stenosis and alveolar hypoventilation is of the central type. 