Three Dimensional Geometry: JEE Main 2022 Mathematics question

If the lines $\overrightarrow r = \left( {\widehat i - \widehat j + \widehat k} \right) + \lambda \left( {3\widehat j - \widehat k} \right)$ and $\overrightarrow r = \left( {\alpha \widehat i - \widehat j} \right) + \mu \left( {2\widehat i - 3\widehat k} \right)$ are co-planar, then the distance of the plane containing these two lines from the point ($\alpha$, 0, 0) is :