t-2-Bn The signal x(t)=-[A (2-8)-A(6-8)] has: O 1. Has real Fourier series coefficients with the even-indexed terms equal zero O 2. Has complex Fourier series coefficients with the odd-indexed terms equal zero O 3. None of the answers O 4. Has complex Fourier series coefficients with no symmetry O 5. Has imaginary Fourier series coefficients with the even-indexed terms equal zero