More than 34% of the species that have been described and assessed are considered threatened with extinction. Which of the following lists shows the highest proportion of vulnerable species?

A) Amphibians, gymnosperms, fish, and birds
B) Gymnosperms, amphibians, fungi, and birds
C) Vertebrates, invertebrates, plants, and fungi
D) Mammals, birds, amphibians, and gymnosperms
E) Fungi, protist species, birds, and mammals