In a Court Case,a Company Was Sued Because a Pregnant

In a court case,a company was sued because a pregnant woman was exposed to chemical vapors one day and subsequently gave birth to an infant with a cleft lip/palate.The embryo was said to have had a menstrual age of 10 weeks at the time of exposure.What was the fertilization age of the embryo?

A) 6 weeks
B) 8 weeks
C) 10 weeks
D) 12 weeks
E) 14 weeks