A uniform magnetic field of magnitude 1 T exists in region $\mathrm{y}\ge 0\mathrm{along}\widehat{\mathrm{k}}$ direction as shown. A particle of charge 1 C is projected from point $\left(-\sqrt{3},-1\right)$ towards origin with speed 1 m/s. If mass of particle is 1 kg, then co-ordinates of centre of circle in which particle moves are

• A

  $\left(1,\sqrt{3},\right)$

• B

  $\left(1,\text{\hspace{0.17em}-\hspace{0.17em}\hspace{0.17em}}\sqrt{3},\right)$

• C

  $\left(\frac{1}{2},-\frac{\sqrt{3}}{2}\right)$

• D

  $\left(\frac{\sqrt{3}}{2},-\frac{1}{2}\right)$