Geologists found a mountain range in Australia and a mountain range in South America that have similar rock distribution. They also think the mountain ranges have weathered at the same rate. In the Australian mountains, they find a large number of Perisphihinctes tiziani fossils. In the South American mountains, they find a layer of Pecten gibbous fossils. Using this chart, which of the following statements is correct? A-The mountain ranges were formed around the same time

B-Australia and South America must have been connected in Earth's history

C-The mountains in Australia are older than the mountains in South America

D-The mountains in South America are older than the mountains in Australia