TOEFL Reading: ETS-TOEFL阅读机经 - DN8HK75D6QA_O73DL$

Which of the following can be inferred from paragraph 3 about angiosperms during the Early Cretaceous? A. They represented less than 1 percent of plant life. B. Their numbers remained stable during this period. C. They existed in forms that are very unlike plants living today. D. They only rarely left traces in the fossil record.