With Regard to Work and Travel During Pregnancy,the Nurse Should

With regard to work and travel during pregnancy,the nurse should be aware of which of the following?

A) Women should sit for as long as possible and cross their legs at the knees from time to time for exercise.
B) Women should avoid seat belts and shoulder restraints in the car because they press on the fetus.
C) Metal detectors at airport security checkpoints can harm the fetus if the woman passes through them a number of times.
D) While working or travelling in a car or on a plane, women should arrange to walk around at least every hour or so.