Each of D, E, F, H, I, J and K has an exam on a different day of a week starting from Monday and ending on Sunday of the same week. K has the exam on Thursday and E has the exam on Saturday. H has the exam immediately before I. F has the exam on one of the days after J. D has the exam immediately after I. How many people have the exam between F and D?
ATwo
BOne
CFour
DThree