Which of the Following Is False Concerning Eugenics

Which of the following is false concerning eugenics?

A) The eugenics movement passed laws meant to eliminate bad genes from the human gene pool.
B) Supporters of eugenics encouraged sterilization of the unfit.
C) Eugenics methods have been highly successful in reducing the frequencies of bad recessive alleles from the human population.
D) Eugenics methods have been unsuccessful, because recessive alleles are hidden in the heterozygous condition and can be passed on to offspring.