Which of the Following Is Not a True Statement

Which of the following is not a true statement?

A) Single-celled organisms formed before multicellular organisms on Earth
B) The first single-celled organism appeared as early as 3.8 billion years ago
C) An atmosphere rich in nitrogen, not oxygen, was the culprit for the development of multicellular life on Earth
D) Multicellular life because more complex and abundant on Earth about 542 million years ago which can be attributed to changes in the composition of the Earth's atmosphere
E) The direct ancestors to modern humans, Homo sapiens , appeared on Earth approximately 5-7 million years ago