General Intelligence · Puzzles

Seven boxes, C, D, E, F, K, L, and M are kept one over the other but not necessarily in the same order. Only three boxes are kept above M. Only one box is kept between F and M. Only three boxes are kept between F and C. C is kept at some place above M. E is kept immediately below C. K is kept at one of the places above D. L is not kept immediately above or below F. Which box is kept at the lowermost position?