Answer:
Option C, A, B, D
Step-by-step explanation:
In simple words, the reporting officer on the crime scene should first ask for first aid to the center if he or she finds someone injured. If there is no such condition then the officer must seal the crime scene to protect the evidence that the reinforcement teams might find earlier.
After protecting the crime scene from any infiltration, officer should himself or herself search for any instant evidence that might not be visible after time. And if the officer gets any eye witnesses then he or she should start questioning.