lThink of a real-world signal that is a personally relevant and interesting. Describe the signal and then classify it according to the six following characteristics: (a) continuous-time or discrete-time (b) analog or digital (c) periodic or aperiodic (d) energy or power (e) causal or noncausal (f) deterministic or random If possible, think of a second real-world signal that has the opposite six characteristics of your first signal. If such a second signal is not possible, carefully explain why that is the case.