A square of side L m lies in XY plane in a region, where the magnetic field is given by $B = B_o(2\hat i+3\hat j+4\hat k)T$ and $B_o$ a constant. The magnitude of the flux passing through the square is:

$2 B_o L^2 Wb$ $3 B_o L^2 Wb$ $4 B_o L^2 Wb$ $\sqrt{29} B_o L^2 Wb$

$4 B_o L^2 Wb$

The correct answer is Option (3) → $4 B_o L^2 Wb$