There Were Critics of the Eugenics Movement in the U

There were critics of the eugenics movement in the U.S. Which of the following is an example of arguments made at the time against some aspect of eugenics (e.g. sterilization etc) ?

A) 90% of "subnormal" children are born to normal parents thus diminishing any effect of sterilization.
B) Carrie Buck's child from the Supreme court case of Buck vs. Bell was found to later be normal and bright.
C) all of these
D) none of these