Why is molecular data for phylogenetic inference best analyzed with use of an explicit model of molecular evolution? A) This is true of morphological data, not molecular data, it is impossible to model changes in molecular sequence data because it is constantly evolving. B) Because molecular data is known to only experience random changes and is constantly evolving, a chaotic model of evolution can universally be applied to molecular sequence data for phylogenetic analysis. C) Because molecular data is known to experience non-random changes in terms of the likelihood of different types of mutations — transitions vs. transversions, at different codon positions, which can be used to infer sequence evolution and relationship. D) None of the above.