Consider the lines L1 and L2 given by
L1:x−1/2=y−3/1=z−2/2,
L2:x−2/1=y−2/2=z−3/3
A line L3 having direction ratios 1, –1, –2, intersects L1 and L2 at the point P and Q respectively. The thelength of the line segment PQ is
A. 3√2
B. 4
C. 2√6
D. 4√3