Some scientists contend that many species of dinosaur had a metabolism more like a warm-blooded mammal's than a cold-blooded reptile's.

• Athat many species of dinosaur had a metabolism more like  
• Bthat the metabolism of many dinosaur species were more like  
• Cthat the metabolisms of many species of dinosaurs were more like those of  
• Dthere were many species of dinosaurs that had metabolisms more like those of  
• Ethere were many dinosaur species that had a metabolism more like that of