Use of Opioid Drugs Such as Codeine and Heroin During

Use of opioid drugs such as codeine and heroin during pregnancy has been shown to have which effect on the developing child?

A) producing moderate structural abnormalities to the child's heart and circulatory system
B) increasing the risk of complications after birth because of withdrawal symptoms and low-birth weight
C) causing genetic damage that will be passed on to their offspring
D) having no identifiable teratogenic effects, despite the media focus on women who habitually use these drugs