Add Cannibalism to the Fearsome Attributes of Tyrannosaurus Rex, the Big-Headed

Add cannibalism to the fearsome attributes of Tyrannosaurus rex, the big-headed dinosaur that roamed North America 66 million years ago and took no prisoners. A study released on the scientific website PLoS ONE suggests T-rex made the tooth marks on four specimens of Tyrannosaurus rex. "If something is dead, it's lunch," said study co-author Gregory M. Erickson. T. rex, known for "puncture and pull" feeding, left discernible marks in the bones of its prey. And, researchers said, no other carnivore living at that time could have left such bite marks in skeletons. They also determined the pattern and nature of the gouges left from bite marks indicated the attacker was likely feeding on a carcass. Immortalized in the popular culture and the movie "Jurassic Park," Tyrannosaurus rex is the poster child of prehistoric creatures. The discovery of T. rex fossils has increased steadily in the past 10 years, Erickson said.
Adapted from Gast, P. (2010, October 17) . Scientists: tyrannosaurus rex munched on its own kind. Retrieved from http://www.cnn.com/2010/US/10/16/tyrannosaurus. cannibalism/index.html?iref=allsearch
-What is the topic of the passage?

A) Cannibalism
B) Tyrannosaurus rex
C) Tyrannosaurus rex's eating habits
D) Tyrannosaurus rex and it relationships