Joanna,a Child Born with the Genetic Condition PKU,may Suffer Mental

Multiple Choice

Joanna,a child born with the genetic condition PKU,may suffer mental retardation unless

A) the child undergoes gene therapy.
B) the child is given drug therapy.
C) the child's diet is restricted to eliminate phenylalanine.
D) the child's diet is restricted to eliminate ribonucleic acid.