How Can the Genetic Mutation Found with Cystic Fibrosis (CF)

Multiple Choice

How can the genetic mutation found with cystic fibrosis (CF) be characterized?
1) There are many variations in the mutation.
2) CF is the most common fatal childhood inherited disorder.
3) The mutation is a dominant trait.
4) The mutation stops ciliary function.

A) 1, 2
B) 3, 4
C) 1, 3
D) 2, 3, 4