7. 已知拉氏轉換(Laplace transform) L {sin ωt}=求反拉氏轉換(inverse Laplace transform)為下列何者?(A)e3t(4cos2t- 5sin2t)(B)e3t(5cos2t-4sin2t)(C)e3t(4cos2t+ 5sin2t)(D)e3t(5cos2t+4sin2t)