What is the equation of the Fourier series coefficient ck of an non-periodic signal?

• A. ( frac{1}{T_p} int_0^{t_0+T_p} x(t)e^{-j2 kF_0 t} dt )
• B. ( frac{1}{T_p} int_{- infty}^ x(t)e^{-j2 kF_0 t} dt )
• C. ( frac{1}{T_p} int_{t_0}^{t_0+T_p} x(t)e^{-j2 kF_0 t} dt )
• D. ( frac{1}{T_p} int_{t_0}^{t_0+T_p} x(t)e^{j2 kF_0 t} dt )