Phenotypic Variation in Tail Length of Unicorns Has the Following

Multiple Choice

Phenotypic variation in tail length of unicorns has the following components: $$\begin{array} { l | l | } \hline \text { Additive genetic variance } & = 0.2 \\\hline \text { Dominance genetic variance } & = 0.4 \\\hline \text { Genicinteraction variance } & = 0.1 \\\hline \text { Environmental variance } & = 0.2 \\\hline \text { Genetic-environmental interacti on variance } & = 0.5 \\\hline\end{array}$$ What is the broad-sense heritability for tail length in these unicorns?

A) 0.14
B) 0.3
C) 0.5
D) 0.7
E) 1.4