Concerning Neurofibromatosis Type 1 (NF1), which one of the following

1.	Concerning Neurofibromatosis Type 1 (NF1), which one of the following statements is true?
A.	Bilateral acoustic neuromas are common
B.	Clinical severity in individuals is similar in a given family
C.	New mutations occur rarely
D.	Pigmented spots on the iris are a characteristic feature
E.	The diagnosis is likely if two caf -au-lait patches are present
Answer» E. The diagnosis is likely if two caf -au-lait patches are present

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Concerning Neurofibromatosis Type 1 (NF1), which one of the following statements is true?

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