I am confused with this multiple-choice question:
Assuming that $x(n) = e^{-2n}u(n)$, what does not happen if we limit the duration of this sequences to 2014 samples?
A. The signal power leaks out into the entire frequency range
B. The energy of the obtained limited-duration signal is greater than that of the original signal $x(n)$
C. Spectral estimate is distorted
D. Spectral resolution is increased
I'm inclined to B because the summation of unlimited duration $x(n)$ would be greater than the limited one since $ x(n) > 0 $ but i don't know how to explain the other options.
Every help is appreciated. Thanks!