Which of the Following Is True About Birthing Practices

Which of the following is true about birthing practices?

A) Recently,midwifery has seen a revival,and about 50% of births in the United States are assisted by midwives.
B) In the early 1900s,the intervention of doctors often made the birth process less dangerous because they now had better expertise and medical equipment.
C) In the 1960s,doctors began administering drugs such as ether and chloroform,which offered pain relief without any side effects.
D) Twilight Sleep was a drug used in the early 20th century that promoted dilation of the cervix and resulted in mothers forgetting the events of birth.