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: Medicine
Fallots tetralogy manifestation is a) Left axis deviation    b) Left ventricular hypertrophy  c) Ventricular Septal Defect  d) Blalock taussig shunt is between pulmonary artery
& subclavian artery  e) Morphine is contraindicated in cyanotic spells 
Select and explain. 
A. abc, B. bd, C. cd, D. cde
C: cd
Answer: C: cd 
Explanation: None