Which one of the following, if substituted for the summarized, which one ... ...

Which one of the following, if substituted for the summarized, which one of the following could be true? condition that F is discussed earlier than O, and O is discussed earlier than both K and R, would have the same effect in determining the plan for the literature course?
(A) T is discussed third, and the last two books discussed are K and R, not necessarily in that order.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in PT71 (Dec 2013): Analytical Reasoning