Which of the Following Statements Best Defines Cystic Fibrosis

Which of the following statements best defines cystic fibrosis?

A) an acquired lung condition that occurs at birth due to oxygen deficiency
B) a congenital anomaly occurring during fetal development as a result of dietary deficiencies of the mother
C) an autosomal recessive disorder that mainly affects the exocrine glands and does multiple system damage
D) a respiratory condition affecting people of Mediterranean descent, involving mainly exchange at a microscopic level in the lungs