A. Is the right answer.
Here is a diagram of blood flow
A short term goal would be to abstain from sex or masturbation for a health reason: waiting for a UTI, STD or other issue (from a procedure, perhaps) until healing comes.A long term goal would be waiting for marriage to have sex and then committing to only have sex with that person.
Long-term activation of your body’s stress response system, along with prolonged exposure to cortisol and other stress hormones, puts you at risk for health troubles. These health issues include digestive problems, anxiety, headaches, depression, sleep problems, weight gain, memory and concentration issues, high blood pressure, heart disease and strokes. Being stressed also lowers your threshold for pain, causing more extreme discomfort from the previous affects.