Your friend Mabel studies wild populations of bison in Yellowstone National Park. She notes that the mean horn length is 30 cm with a variance of 5 cm. She knows that bison horns are an important defense weapon and is curious if evolution might select for longer horns. After intense study of the bison population, Mabel determines the variance components to be: VA=0.1, VD=0.2, VI=0.3, VG=0.6, VE=3.4, VGE=1.0. In your informed opinion, how well will horn length respond to selection for longer horns in this population?