How is the animal hemisphere of a frog blastula different from the vegetal hemisphere?

• A. The cells of the vegetal hemisphere do not participate in gastrulation.
• B. The vegetal hemisphere is where the blastocoel is located.
• C. The cells of the vegetal hemisphere are pigmented more darkly than the cells of the animal hemisphere.
• D. The blastomeres in the animal hemisphere are larger than the cells in the vegetal hemisphere.
• E. The cells of the vegetal hemisphere have more yolk than the cells of the animal hemisphere.