What is the suggested reason for webbing between human embryonic digits?

A)Webbing between the fingers and toes is important for proper embryonic movement.
B)Webbing is an evolutionary vestige that serves no purpose in the human embryo.
C)Webbing ensures proper signal transduction in embryonic hands and feet.
D)Webbing facilitates the transfer of oxygen between cells in embryonic hands and feet.
E)Webbing assist with cell migration as embryonic hands and feet develop.