WILL GIVE BRAINLIEST. Which description is true regarding fossils and phylogenetic trees of species that have lived on Earth?

A. Some species are extinct. Phylogenetic trees occasionally involve traits of extinct species whose traits require the study of fossils. , Some species are extinct. Phylogenetic trees occasionally involve traits of extinct species whose traits require the study of fossils. , ,

B. Most species are extinct. To classify an extinct organism on a phylogenetic tree, the study of fossils is often required to determine the traits of extinct species.

C. A few species are extinct. The fossils of these extinct species can be used to create phylogenetic trees. , A few species are extinct. The fossils of these extinct species can be used to create phylogenetic trees. , ,

D. No species are extinct. Therefore, fossils are not needed to create phylogenetic trees.