Children Living in Impoverished Neighborhoods Are at Greater Risk for Chronic

Children living in impoverished neighborhoods are at greater risk for chronic lead exposure. What is true about the symptoms of prolonged exposure?

A) Most lead exposures have minimal impact if any.
B) Lead ingestion can cause stomach or intestinal issues.
C) Lead leads to lower intelligence, verbal and visual-motor deficits, and physical ailments.
D) Lead causes behavioral issues but is treatable.
E) Mercury poisoning is the only teratogen that is dangerous to children.