GRE Reading Comprehension: ETS-GRE阅读ETS - WVPL5KA63751PNFR7

It can be inferred from the passage that each of the following is a consideration in determining whether a particular planet is a possible source of shergottites that have been discovered on Earth EXCEPT the A. planet's size B. planet's distance from Earth C. strength of the planet's field of gravity D. proximity of the planet to its moons E. chemical composition of the planet's surface