Childbirth Preparation Offers Several Advantages Including Which of the Following

Childbirth preparation offers several advantages including which of the following?
Note: Credit will be given only if all correct choices and no incorrect choices are selected.

A) It helps a pregnant woman and her support person understand the choices in the birth setting.
B) It promotes awareness of available options.
C) It provides tools for a pregnant woman and her support person to use during labor and birth.
D) Women who receive continuous support during labor require more analgesia, and have more cesarean and instrument births.
E) Each method has been shown to shorten labor.