Direction: Study the following information carefully to answer the questions given below-

Six boxes D, E, R, K, F and O are placed in shelf not necessarily in the same order. The box which is placed at the bottom, numbered as box 1 and its above is numbered 2 and so on top most box numbered as box 6.

Two boxes are placed between E and F. E is placed above F. Four boxes are placed above R. D is placed above K. K is not placed at the bottom position. F is not placed at bottom.