Despite their friendly and amusing appearances, adult chimpanzees, having up to five times the upper-body strength of an adult human, are still known to act aggressively towards human owners.

A. Despite their friendly and amusing appearances, adult chimpanzees, having up to five times the upper-body strength of an adult human, are still

B. Adult chimpanzees have up to five times the upper-body strength of an adult human, and despite their friendly and amusing appearances, are still

C. Despite their friendly and amusing appearances, adult chimpanzees, having up to five times the upper-body strength of an adult human, are

D. Adult chimpanzees have up to five times the upper-body strength of an adult human, and despite their friendly and amusing appearances, is

E. Despite its friendly and amusing appearance, the adult chimpanzee, having up to five times the upper-body strength of an adult human, are

OA C

Source: Economist Gmat