If f(t) = u(t), then its Laplace transform is?a) \(\frac{scos(b)-asin(b)}{s^2+a^2}\) b) 1/2c) \(\frac{s}{s^2-a^2}\) d) \(\frac{b}{(s-

• A. \(\frac{scos(b)-asin(b)}{s^2+a^2}\)
• B. -asin(b)}{s^2+a^2}\) b) 1/2
• C. \(\frac{s}{s^2-a^2}\)
• D. \(\frac{b}{(s-a)^2+b^2}\)