28. The unilateral Laplace transform of f(t) i...

28. The unilateral Laplace transform of f(t) is \(1\over s^2+s+1\) .Which one of the following is the
unilateral Laplace transform of g(t) = t. f(t)?

(A) \(-s\over {s^2+s+1}^2\)

(B) \(-(2s+1)\over {s^2+s+1}^2\)

(C) \(S\over {s^2+s+1}^2\)

(D) \(2S+1\over {s^2+s+1}^2\)

Hint: 

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