In "The Think Tank," which can be inferred from the fact that Shumaker says that orangutans, like humans, "are all individuals"? A All orangutans enjoy learning, but very few are truly gifted learners. B Orangutans must be treated as friends first and research subjects second. C Some orangutans actually think that they are human beings. OR D No two orangutans will think, learn, or act in exactly the same way.