It Was the First Day of the College When a Young Girl was Found Dead near the class premises. The police suspect 4 people.
>Principal claims he was in the office.
>Physics Teacher claims he was giving his students grades.
>Attender claims he was arranging books in the library.
>Cleaner claims she was cutting the grass in the playground.
So who was the murderer?
Answer:(please provide your opinion in Comments section)