2. Find the corresponding ending for the following statements. 1. This sequence is converted into an analog signal 2. To avoid signal reflections at the near-and far-end hybrid, 3. The signal obtained after echo cancellation 4. The transmitted data consist of a sequence of 5. Near-end crosstalk cancellation must be performed a) a precise knowledge of the line impedance would be required. b) is processed by a detector. c) by a digital to analog convert. d) to ensure reliable communication. e) independent and identically disturbed real-valued symbols.