A Woman in Her 26th Week of Pregnancy States That

A woman in her 26th week of pregnancy states that she is "not really short of breath" but feels that she is always aware of her breathing and the need to breathe.Which of the following would be the nurse's best reply?

A) "The diaphragm becomes fixed during pregnancy,making it difficult to take in deep breaths."
B) "The increase in estrogen levels during pregnancy often causes a decrease in the diameter of the rib cage and makes it difficult to breathe."
C) "What you are experiencing is normal.Some women may interpret this as shortness of breath,but nothing is wrong."
D) "This is normal as the fetus grows because of the increased oxygen demand on the mother's body,which results in an increased respiratory rate."