In Von Willebrand Disease,which Is Either Autosomal Recessive or Autosomal

In von Willebrand disease,which is either autosomal recessive or autosomal dominant,clotting time slows and the person bruises and bleeds easily.Not everyone who inherits the disease genotype actually develops the phenotype.Affected individuals have differing degrees of difficulty in clotting of blood.This condition is

A) completely penetrant,variably expressive,and not genetically heterogeneic.
B) incompletely penetrant,variably expressive,and genetically heterogeneic.
C) completely penetrant,invariably expressive,and not genetically heterogeneiC.
D) pleiotropic and genetically heterogeneic