Correct option is B
Final Arrangement:
Clues: D is four designations senior to G. G is designated immediately senior to B who is not peon. Two persons are designated between A and E. E is senior to A.
Inference: We have three possible cases here:
Clues: F is designated junior to A but not immediately junior. F is not designated as the junior most person.
Inference: Case 1 gets cancelled here:
Clues: I is designated senior to C and H. I is not designated as HR. H is designated junior to C
Inference: Case 2 gets cancelled here:
Inference: Now, the final Arrangement is here:
The person who is two persons senior to B i.e. F is designated as Executive.