The first paragraph of the passage implies which of the following concerning sound and communication? A. A lack of redundancy in certain signals does not preclude communication. B. The excess of sound encoded in speech serves as an encumbrance to the exchange of information. C. Many features of a sound can be lost without necessarily compromising communication between two speakers. D. The human processing of acoustic sound does not depend on contextual factors. E. Some languages depend on social cues in order for speakers to be mutually intelligible.