Which of the following was not a geological clue used to support the theory of continental drift?

A.
Rocks of the same composition and age were found in Brazil and South Africa.
B.
Fossils of the reptile Lystrosaurus were found on the landmasses of Africa, India, and Antarctica.
C.
Fossils of the plant Glossopteris were found on the landmasses of South America, Africa, India, Antarctica, and Australia.
D.
Samples of ocean water tested off the coast of South America contained the same salt content as oceans near Africa.