Which Situation Will Lead to the Largest Heritability Coefficient for Reading

Which situation will lead to the largest heritability coefficient for reading disability?

A) well-educated parents providing academically stimulating environments that foster children's reading ability
B) less-educated parents providing academically stimulating environments that foster children's reading ability
C) well-educated parents providing environments that do not foster children's reading ability
D) less-educated parents providing environments that do not foster children's reading ability