Study the following information carefully and answer the given questions.
A, B, C, D, E and F are sitting in a straight line facing North.
(A) A sits third to the right of D.
(B) Neither A nor D sits at any of the extreme ends of the line.
(C) C sits second to left of E.
(D) B sits second to right of F.
(E) B does not sit at an extreme end of the line.
If all the persons are made to sit in alphabetical order from right to left , the positions of how many are there in the original seating positions?