This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Larvae of Ascaris lumbricoidis most commonly causes? 
Select and explain. 
A. Cardiac symptoms, B. Respiratory symptoms, C. Genitourinary symptoms, D. Cerebral symptoms
B: Respiratory symptoms
Answer: B: Respiratory symptoms 
Explanation: Ans. is 'b' i.e., Respiratory symptoms Clinical manifestations of ascariasis can be divided into two groups :- Due to adult worm : Adult worm causes malnutrition, abdominal pain, anorexia, intestinal obstruction, appendicitis, obstructive jaundice, pancreatitis, intestinal perforation and allergic manifestations. in Due to migrating larva : Loeffler's syndrome (eosinophilic pneumonia).