=>

Since at least one student should be between the two teachers, we should consider complementary cases. This means we should calculate the difference between the total number of arrangements and the number of arrangements in which the teachers are adjacent to each other.

The total number of ways in which 5 people can stand in a row is 5!= 120.

The total number of arrangements with the teachers adjacent to each other is 4! * 2!.

Thus, the total number of permitted arrangements is 5! – 4! * 2! = 120 – 48 = 72.

Therefore, the answer is B.

Answer: B

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