The Case Study of the Genain Quadruplets Indicates That

 The case study of the Genain quadruplets indicates that

A) genetics play a major role in schizophrenia, with little, if any, influence from the environment.
B) the environment plays a major role in schizophrenia, with little, if any, influence from genetics.
C) genetics play a strong role in schizophrenia, but environmental factors contribute as well.
D) environmental factors play the strongest role in schizophrenia, but genetics contribute slightly to the outcomes.