Which of the following box was placed at the top?

Study the following information carefully and answer the question given below: Six boxes of different colours were stacked one above the other in an almirah. Orange coloured box was placed below Gray coloured box, which was placed immediately above the Brown coloured box. Neither the Yellow nor Blue coloured box was placed at the bottom of the stack. Orange coloured box was placed below the White coloured box, which was placed at the gap of 2 boxes below Blue coloured box. Yellow coloured box was not placed adjacent to White coloured box.