This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Apoptosis, Subject name: Pathology
Apoptosis is? 
Select and explain. 
A. Internally controlled, programmed cell death, B. Externally controlled, programmed cell death, C. Internally controlled, programmed enzyme degradation, D. Externally controlled, programmed karyolysis
A: Internally controlled, programmed cell death
Answer: A: Internally controlled, programmed cell death 
Explanation: Ans. (a) Internally controlled, programmed cell deathRef: Robbin's pathology 9th ed. /52* Apoptosis is internally controlled, programmed cell deathSalient Features of Apoptosis:* No inflammation* Cell shrinkage* Formation of apoptotic bodiesExample* PhysiologicahEmbryogenesis, Organogenesis, Men- struation* Pathological: Acute viral hepatitis- Councilman bodies