Which of the Following Features Is NOT an Advantage of an Organism

Which of the following features is NOT an advantage of an organism that has a viviparous life history?

A) The eggs are retained within the body of the mother until the offspring are able to fend for themselves.
B) Development of the offspring occurs inside of the female.
C) Offspring can live independently shortly after they are born.
D) The mother supplies the offspring with nourishment,even after birth.
E) The unborn offspring is supplied with a continuous flow of nutrients during development.