TOEFL Listening: TPO-TOEFL阅读TPO - QFH1348102ABS5E2N$

Why does the author mention that "dogs recognize each other via smell"? A. To point out the similarities between dogs and deer B. To argue that animals communicate through scent rather than through vision C. To support the claim that the scent of a buck rub serves to identify its maker to other deer D. To suggest that buck rubs can be detected by other species