If the differential equation for a simple harmonic motion is \[\frac{{{d}^{2}}{{y}^{2}}}{d{{t}^{2}}}+2y=0\], the time-period of the motion is

• A. \[\pi \sqrt{2}s\]
• B. \[\frac{\sqrt{2}s}{\pi }\]
• C. \[\frac{\pi }{\sqrt{2}}\]
• D. \[2\pi s\]