TOEFL Listening: TPO-TOEFL阅读TPO - ZFO6CCAUCPUC0DV3N$

What reason does the author provide for the claim that "Mendeleyev was bolder than Meyer"? A. Mendeleyev corrected incorrect information Meyer had proposed. B. Mendeleyev assumed that some information believed to be true about the elements was incorrect. C. Mendeleyev argued that Meyer had not left enough gaps in the periodic table. D. Mendeleyev realized that elements were not ordered by atomic mass in the periodic table.