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Employing high-performance liquid chromatography—a process that uses pressurized water to separate material into its component molecules—astrochemist Yashiro Oba and colleagues analyzed two samples of the Murchison meteorite that landed in Australia as well as soil from the landing zone of the meteorite to determine the concentrations of various organic molecules. By comparing the relative concentrations of types of molecules known as nucleobases in the Murchison meteorite with those in the soil, the team concluded that there is evidence that the nucleobases in the Murchison meteorite formed in space and are not the result of contamination on Earth. Which choice best describes data from the table that support the team's conclusion? Nucleobase Concentrations (in Parts per Billion): Nucleobase Murchison meteorite sample 1 Murchison meteorite sample 2 Murchison soil sample Isoguanine 0.5 0.04 not detected Purine 0.2 0.02 not detected Xanthine 39 3 1 Adenine 15 1 40 Hypoxanthine 24 1 2