Six boxes labelled L, M, N, O, P, and Q, are arranged vertically from top to bottom. The top position is considered the 1st position, whereas the bottom position is the last position. Box Q is placed immediately above box P. There are three boxes between L and
M. Box L is above box
M. There is one box between P and O. There are three boxes between P and N. Box P is placed in the second-last position. Which of the following boxes is placed immediately above box O?