5. A particle begins at the origin and moves successively in the following manner as shown, 1 unit to th right, 1/2 unit up, 1/4 unit to the right, 1/8 unit down, 1/16 unit to the right etc. The length of ea move is half the length of the previous move and movement continues in the zigzag' manner indet nitely. The co-ordinates of the point to which the ‘zigzag' converges is- 1/4 1汕 1/16 (A) (4/3, 2/3) (B) (4/3, 2/5) (C) (3/2, 2/3) (D) (2, 2/5)