The exhibit models, thelr accompanying text, and the overall layout of the Center organized the principal contents of the solar system by objects of like properties, rather than as enumerations of planets and their moons. The formal tone is best maintained by which of the following summaries? A. The center was really great because everything was so organized by what things were alike. B. There were planets and moons and such everywhere until they put the parts together that were a lot like each other. C. The typical museum layout was to organize celestial objects by order, instead of the more logical grouping of common features. D. Everything in the museum used to be all over the place, but then it finally got fixed up into groups of the same things together.