Which of the Following Techniques Is an Appropriate Method of Estimating

Which of the following techniques is an appropriate method of estimating the gestational age?

A) Measuring the circumference of the woman's abdomen; each inch corresponds to one week of pregnancy.
B) Palpate the abdomen and estimate gestational age based on the size of the developing fetus.
C) Measure the height of the fundus; each centimeter corresponds to one week of pregnancy.
D) Palpate the abdomen; if fetal movement is felt then the pregnancy is at least 14 weeks.