Which of the following functionss represents a simple harmonic oscillation ?

Which one of the following functions represents a simple harmonic oscillation ?

Simple harmonic oscillations are

Which of the following equations represents a simple harmonic wave ?

Which of the following equation represents a simple harmonic motion ? ( omega is angular frequency, A is amplitude of oscillation and I = sqrt(-1)

Which of the following equation does not represent a simple harmonic motion

Which of the following equation does not represent a simple harmonic motion

Which of the following expressions represent simple harmonic motion?