Which One of the Following Statements About Determining Fetal Age

Which one of the following statements about determining fetal age is false?

A) Measure the head circumference at the same level as the biparietal diameter (BPD) .
B) Measure the abdominal circumference at the level of junction of the umbilical vein and portal sinus.
C) Measure the femur length on the femur farthest from the transducer.
D) Measure BPD in the axial plane that includes the thalamus and cavum septum pellucidum.