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: Pathology
Involved in Hereditary spherocytosis-a)  Spectrinb)  Ankyrinc)  Pyrind)  Band 4.2e)  Actin 
Select and explain. 
A. acd, B. abd, C. abc, D. ab
B: abd
Answer: B: abd 
Explanation: Hereditary spherocytosis

Ankyrin (most common)       
Band 3 (protein 3 or Anion transport channel)
Spectrin                                       
Band 4.2