What Are the Events That Occur During the Initial Stage

What are the events that occur during the initial stage of shock?

A) The kidneys fail to filter blood wastes.
B) The sympathetic nervous system is triggered.
C) The liver and the gastrointestinal system suffer ischemia.
D) The heart and brain begin to sustain decreased perfusion.
E) The rennin-angiotensin-aldosterone system (RAAS) is triggered.