GRE Reading Comprehension: ETS-GRE阅读ETS - BFVT16SFKNLMK5237

The author implies that a nearly circular orbit is unlikely for a satellite that A. circles one of the inner planets B. is deficient in iron C. is different from its planet geochemically D. was formed by a collision between two celestial bodies E. was formed out of the planet-forming materials in the presolar nebula