Why can taking LSD in order to experience its hallucinogenic qualities become a dangerous activity?

• A. Real dangers and hazards may go unnoticed by a person who is 'lost' in an LSD fantasy.
• B. Those who take LSD become susceptible to a permanent state of irreversible hallucinogenic psychosis, which leaves them unable to tell reality from fantasy.
• C. Those who overdose on LSD run the risk of experiencing instantaneous cardiac death.
• D. The relationship between the chemical mechanism of LSD and the binding process of endorphins can lead to a medical condition called congenital insensitivity to pain with anhidrosis, or CIPA.