Two planes E and F start flying from the same point. E flies 7 km west, then turns to its left and flies 15 km. Meanwhile F flies 11 km east and turns right and flies 15 km. Where is F with respect to E?
1
F is 18 km west of E
2
F is 4 km east of E
3
F is 18 km east of E
4
F is 4 km west of E