Out of the three transforms viz. Z-transform, Laplace transform and Fourier transform

• A. all three are used in continuous time domain
• B. all three are used in both continuous time domain and discrete time domain
• C. Z transform is used in continuous time domain while Laplace and Fourier transforms are used in discrete time domain
• D. Z transform is used is discrete time domain while Laplace and Fourier transforms are used in continuous time domain