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
In a rural clinic, a 3 year old girl child is brought by her mother and is emaciated. Her Hb was 5g/ dl. The girls also had edema over her knees and ankle, with discrete rash on her knees, angles and elbows. The most likely worm infestation causing these manifestations is? 
Select and explain. 
A. Hook worm, B. Round worm, C. Whip worm, D. Pin worm
A: Hook worm
Answer: A: Hook worm 
Explanation: None