A 8 year old boy presents with recurrent pneumonia since birth. The boy had a history of delayed passage of Meconium at  birth. Probable diagnosis is: (A) Kartagener's syndrome, (B) Bronchiectasis, (C) Cystic fibrosis, (D) Hirnchiprung disease
Answer is C. Features of Cystic fibrosis

Delayed passage of Meconium
Recurrent pneumonia
Steatorrhea
Late onset Diabetes
Azoospermia