Scientists' drilling in Antarctica has revealed the true state of Antarctica tens of millions of years ago, and they have found ancient Antarctica that is very different from today. During the Eocene period, 48 million to 55 million years ago, the temperature was higher here. Maybe a green coast. Which of the above is true and best supports the above conclusion? ['Researchers observed the submarine volcanic cones distributed at a uniform depth and found that large-scale volcanic eruptions occurred during the Eocene.', 'The study found that the warmest zone in Antarctica . the South Shetland Islands is home to 200 species of freshwater algae that sometimes grow on ice.', 'c. Scientists found the pollen of the kapok tree in the sediments of the seafloor, which is a plant growing in tropical areas. Its trunk is not only thick but also can store water.', 'During the seafloor exploration, scientists found some fossils similar to prokaryotes, which means that Antarctica may have given birth to early life forms.']