A continuous time system has an output, y, which is given by LaTeX: y(t) = 0.5t3 - 5y(t)=0.5t3−5 It is sampled at a frequency of LaTeX: 1 Hz1Hz . Determine the expression that correctly represents the discrete signal obtained after sampling and its value for n = 2. a. y(n) = 0.5n3 - 5, value at n = 2 is -1b. y(n)=0.5n3−5,valueatn=2is−1 LaTeX: y(n) = 1.7n2 – 0.35, value at n = 2 is -0.7568c. y(n)=1.7n2–0.35,valueatn=2is−0.7568 LaTeX: y(n) =5.6 n2 – 1.3, value at n = 2 is 0d. y(n)=5.6n2–1.3,valueatn=2is0 LaTeX: y(n) =0.5n2 - 7, value at n = 2 is -1