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The electronic configuration of $Be_2$ molecule according MOT is ______.

• A
  $\left(\sigma 1 s^2\right)\left(\sigma^* 1 s\right)^1, \sigma 2 s^2, \sigma^* 2 s^2$
• ✓
  $(\sigma 1 s)^2\left(\sigma^* 1 s\right)^2, \sigma 2 s^2, \sigma^* 2 s^2$
• C
  $\left(\sigma 1 s^2\right)\left(\sigma^* 1 s\right)^2, \sigma 2 s^2, \sigma^* 2 s^0$
• D
  $\left(\sigma 1 s^2\right)\left(\sigma^* 1 s\right)^2, \sigma 2 s^1, \sigma^* 2 s^2$