Which of the following sentences is TRUE
[A] All apes are brown or black, [C] Apes have weak legs but very strong arms.
[B] All parts of apes' bodies are covered with hair. [D] Apes' arms are strong enough to swim.

A．the gorilla is the biggest
B．the gibbon is only three feet high but it is heavier than the orangutan
C．the orangutan is smaller than the gorilla and cleverer than the gibbon
D．the orangutan can stand up to a great height, but others cannot

A．chimpanzees can do better than human children
B．chimpanzees can do many things that human children cannot do
C．human children can do many things that chimpanzees cannot do
D．the intelligence of chimpanzees is similar to that of human children