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In which of the following useful signals, is the bilateral Laplace Transform different from the unilateral Laplace Transform?

In which of the following useful signals, is the bilateral Laplace Transform different from the unilateral Laplace Transform? Correct Answer u(t)

The bilateral LT is different from the aspect that the integral is applied for the entire time axis, but the unilateral LT is applied only for the positive time axis. Hence, the u(t) differs in that aspect and hence can be used to differentiate the same.

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