An aircraft moves 400m towards north 300m towards west and then 1200m vertically upward then its displacement from the initial position is

 An aircraft moves 400m towards the north, 300m towards the west, and then 1200m vertically upward. Then its displacement from the initial position is

(a) 1500 m
(b) 1400 m
(c) 1300 m
(d) 1200 m

Answer: (c) 1300 m