Narrow-Sense Heritability of Height in Humans Was Estimated at About

Narrow-sense heritability of height in humans was estimated at about 0.8.What does that tell us about the trait in a group of 100 students?

A) That 80 of students will be tall
B) That 20 of the students will be tall
C) That at least 20 of them will have medium-to-tall height variation
D) That 20% of variation of this trait can be attributed to additive genetic variance
E) That 80% of variation of this trait can be attributed to additive genetic variance