On a Routine Visit,your Patient,who Has Just Completed the Fifth

On a routine visit,your patient,who has just completed the fifth month (gestational age) of her pregnancy,asks: how big is my child? What is the correct answer to her question?

A) About 5.5 cm or 2 inches crown-rump length
B) About 12 cm or 4.5 inches crown-rump length
C) About 30 cm or 12 inches crown-rump length
D) About 42.5 cm or 16.5 inches crown-rump length
E) About 51 cm or 20 inches crown-rump length