This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET Jan 2020, Subject name: Surgery
Which one of the following is not a component of THORACOSCORE? 
Select and explain. 
A. Performance status, B. Complication of surgery, C. ASA grading, D. Priority of surgery
B: Complication of surgery
Answer: B: Complication of surgery 
Explanation: Thoracoscore Most used model to assess risk of operative moality in thoracic patients. Risk is calculated based on nine variables - Age Sex American Society of Anesthesiologists (ASA) score (<=2, >=3) Performance status according to Zubrod scale(<=2, >=3) Dyspnoea score according to MMRC scale (<=2, >=3) Priority of surgery ( Elective, urgent/emergency) Extent of surgery (Pneumonectomy, other) Malignant diagnosis ( Malignant, Benign) Composite comorbidity score