This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
In apoptosis initiation: 
Select and explain. 
A. The death receptors induce apoptosis when they get engaged by fas ligated system, B. Cytochrome C inhibits Apoptosis activating factor -1, C. Apoptosis may be initiated by caspase activation, D. Apoptosis mediated through DNA damage
A: The death receptors induce apoptosis when they get engaged by fas ligated system
Answer: A: The death receptors induce apoptosis when they get engaged by fas ligated system 
Explanation: The death receptors induce apoptosis when they get engaged by fas ligand system Ref, Robbins 9/e p56.