Use reasoning to answer the following question.
At a meeting of the 3 Joint Chiefs of Staff, the Chief of Naval Operations does not want to sit next to the Chief of the National Guard Bureau. How many ways can the 3 Chiefs of Staff be seated around a circular table?\nOptions:\n(A) 120\n(B) 480\n(C) 960\n(D) 2520\n(E) 5040

(C)
Bunuel, I'm also a little confused with the number of arrangements of n distinct objects in a circle.

Why is it given by (n-1)!.

In theveritasanswer they say:answer C (960), should be the number of ways to arrange all 7 without the seating restriction given.

Is this incorrect?.

So, the final answer is (C)