MCQShareWhich of the following expression does not represent simple harmonic motion?A $\text{x}=\text{A}\cos\omega\text{t}+\text{B}\cos\omega\text{t}$ B $\text{x}=\text{A}\cos(\omega\text{t}+\alpha)$ C $\text{x}=\text{B}\sin(\omega\text{t}+\beta)$ D $\text{x}=\text{A}\sin\omega\text{t}\cos^2\omega\text{t}$