<prompt> Activity of factor VIII procoagulant is deficient in:HaemophiliaVon Willibrands diseaseITPSickle cell anemia  <response>: A i.e. HemophiliaHemophilia A is a disorder of coagulation occurs due to deficiency or reduced activity of factor VIII.FeaturesHemophilia A Classical hemophiliaHemophilia B Christmas diseaseDefectDeficiency of coagulant subunit of factor VIII i.e. VIIICfactor VIIIVIIIC VWFDeficiency of factor IXQPathway ofcoagulation affectedInstrinsic pathwayIntrinsic pathway 