A 24-year-old primigravid patient comes to the physician because of vaginal bleeding. Her last menstrualperiod was 8 weeks ago. Since then, she has had no problems with the early pregnancy except for some nausea and vomiting. She is afebrile, and her vital signs are stable. Pelvic examination shows a small amount of brown blood in the vagina. The cervical os is closed The uterus is 8-week size and nontender. There are no adnexal masses or tenderness. Pelvic ultrasound shows an 8-week fetus with a heart rate of i58/min and nc abnormalities. The patient wants to know what the prognosis is for her pregnancy. Which of the following is the correct response? (A) There is no risk of miscarriage (B) There is approximately a 10% risk of miscarriage C) There is an approximately 50% risk of miscarriage (D) There is an approximately 75% risk of miscarriage (E) Miscarriage is almost certain
