Abnormal Brain Development in FAS

A public health nurse is counseling two expectant mothers about the risks of alcohol consumption. Mother A consumed several alcoholic beverages per day during the third and fourth weeks of her pregnancy, a time when she was unaware she was pregnant. Mother B consumed a similar amount of alcohol, but only during the eighth month of her pregnancy. Based on the principles of prenatal development, which statement best analyzes the potential impact on the developing nervous system in these two cases?

A pregnant individual consumes a significant amount of alcohol during the 4th week of gestation, a time when the foundational structures of the nervous system are forming. Another pregnant individual consumes the same amount of alcohol during the 30th week of gestation. Which statement best analyzes the likely impact on the developing fetuses?