That would be true, this is all part of a good diet
Pelvic inflammatory disease is the most likely cause in 99% of studies on this matter
BMI of less than 18 is considered underweight... However, when considering BMI, you do want to take into consideration muscle mass, height, etc...
Over 35 is obese
I would choose A, because having a BMI less than 35, 30 or 40 wouldn't be a risk factor.