Let \(\rm L_{1}: \frac{\mathrm{x}-1}{1}=\frac{\mathrm{y}-2}{-1}=\frac{\mathrm{z}-1}{2}\) and \(\mathrm{L}_{2}: \frac{\mathrm{x}+1}{-1}=\frac{\mathrm{y}-2}{2}=\frac{\mathrm{z}}{1} \) be two lines.
Let L3 be a line passing through the point (α, β, γ) and be perpendicular to both L1 and L2. If L3 intersects L1, then |5α – 11β – 8γ| equals :
1
18
2
16
3
25
4
20