Correct option is B
Six persons: A, B, C, D, E, F (facing North)
Condition i:
C is fourth to the right of the one who is second to the left of D
Condition ii:
3 persons between F and C
1 person between E and A
A is at extreme end
Condition iii:
B and C are not neighbours
Final arrangement (Left → Right):
F B D E C A
Position of B = 2
Immediate right of B = D
Second to the right of D:
D → E (1) → C (2)
Answer = C