What Does the Story of the Glowing Jellyfish Gene Illustrate

What does the story of the glowing jellyfish gene illustrate about biodiversity?

A) Every species matters. There's no telling where we might get a resource we need.
B) All organism genes are valuable in genetic engineering.
C) Jellyfish genes are useful in mosquitoes.
D) All organisms can swap genes.
E) Preserving jellyfish in particular is very important.