A pregnant client asks the nurse about the safety of consuming alcohol during pregnancy. Which of the following is the nurse's best response?

A. "Occasional drinking in the third trimester is acceptable as long as you don't binge drink.": Even occasional alcohol consumption during any trimester can lead to adverse effects, as the fetal brain and organs continue to develop throughout pregnancy. B. "No amount of alcohol during pregnancy is considered safe, and it can cause lifelong fetal harm.": Alcohol is a known teratogen that can lead to fetal alcohol spectrum disorders (FASDs). These include physical, cognitive, and behavioral abnormalities that are permanent and entirely preventable through abstinence. C. "Small amounts of alcohol during the first trimester are safe and won't harm your baby.": The first trimester is a critical period for organogenesis, and alcohol exposure at this stage increases the risk of miscarriage and congenital malformations. D. "Alcohol is only harmful if consumed in large quantities during the last trimester.": Alcohol exposure at any stage of pregnancy can disrupt fetal growth and neurodevelopment. The risk is not limited to large quantities or to the last trimester.