This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Inflammation & Repair, Subject name: Pathology
Severe infection will increase if absolute neutrophil count will become? 
Select and explain. 
A. <500, B. Less than 800, C. Less than 1000, D. Less than 2000
A: <500
Answer: A: <500 
Explanation: Ans. (a) <500(Ref: Robbins 9th/pg 582)Neutropenia is denoted as ANC (absolute neutrophil count)ANC=100(%neutrophils+%bands)x(WBC) Mild neutropenia (1000>=ANC<1500): minimal risk of infectionModerate neutropenia (500>=ANC<1000): moderate risk of infectionSevere neutropenia (ANC<500): severe risk of infection.Agranulocytosis refers to a virtual absence of neutrophils in peripheral blood. It is usually applied to cases in which the ANC is lower than 100/mL