A particle of charge per unit mass $\alpha$ is released from origin with a velocity $\overrightarrow{\mathrm{v}}={\mathrm{v}}_0\widehat{\mathrm{i}}$ in a uniform magnetic field $\overrightarrow{\mathrm{B}}=-{\mathrm{B}}_0\widehat{\mathrm{k}}.$  If the particle passes through (0, y, 0), then y is equal to

• A

  $-\frac{2{\mathrm{v}}_0}{{\mathrm{B}}_0\mathrm{\alpha }}$

• B

  $\frac{{\mathrm{v}}_0}{{\mathrm{B}}_0\mathrm{\alpha }}$

• C

  $\frac{2{\mathrm{v}}_0}{{\mathrm{B}}_0\mathrm{\alpha }}$

• D

  $-\frac{{\mathrm{v}}_0}{{\mathrm{B}}_0\mathrm{\alpha }}$