A line with direction cosines proportional to 2, 1, 2 meets each of the lines $x=y+a=z$ and $x+a=2y=2z$. The co-ordinates of each of the point of intersection are given by

Question

( A ) $(3a, 3a, 3a), (a, a, a)$
( B ) $(3a, 2a, 3a), (a, a, 2a)$
( C ) $(3a, 2a, 3a), (a, a, a)$
( D ) $(2a, 3a, 3a), (2a, a, a)$