For Multifactorial Traits,how Would the Liability Threshold Model Predict That

For multifactorial traits,how would the liability threshold model predict that a second affected child in a family would alter risk estimates for future pregnancies?

A) The risk estimate would increase
B) The risk estimate would decrease
C) The risk estimate would remain the same
D) The chances would be exceedingly small that there would be a third affected child

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