Which of the Following Is False About Marfan Syndrome

Which of the following is false about Marfan syndrome?

A) It results from an autosomal dominant mutation.
B) The affected gene produces a defective form of the protein fibrillin.
C) Aortas of Marfan's patients are susceptible to rupture.
D) It affects one in five thousand men and women.
E) None of these is false.