A、proBlEm thAt hAs plAguED somE FiCtionAl utopiAs is ______.
A、CrEAtion oF supEr-ApEs
B．thE nECEssity oF BrEEDing supEr-humAns
C．thE nECEssity oF BrEEDing suBhumAns
D．thE DEgrADAtion oF BEAsts