Mateo Is on a Strict Diet Because His Parents Are

Multiple Choice

Mateo is on a strict diet because his parents are aware that he cannot metabolize a certain amino acid.Buildup of this amino acid in his system could result in mental retardation.Mateo has:

A) Down syndrome.
B) Phenylketonuria (PKU) .
C) Sickle-cell anemia.
D) Huntington disease.