Six individuals J,K,L,M,N and O are standing in a single line.They are all facing forward.

J is either first or last in the line.
O is the fourth person in line.
M is standing either immediately in front of or immediately behind N.
K is standing either immediately in front of or immediately behind N.
If M is the seconf person behind L in the line,then which of the following is a complete and accurate listing of the positions in which K could be standing?

a.first,second
b.second,third
c.second,fifth
d.first,second,third,fifth
e.first,second,third,fifth,sixth