How does heart failure affect the body?

A. Oxygen does not make it to the brain

B. Energy is not given to the body

C. Carbon dioxide builds up in the body

D. All of above

I think it's A : P

It's D. Because all of that happens firstly yeah no oxygen but also no energy because there's no air going to the brain. since also your heart is not taking oxygen, or like not working, there is gonna be a massive build up!