Which one is it HELP pleaseeee

==================================
Work Shown:
MN = x
ML = 6
JN = 8.8
JK = 9.6
----------
Triangle MNJ is similar to triangle LNK, so the corresponding pieces form a proportion as shown below
MN/ML = JN/JK
x/6 = 8.8/9.6 plug in given values
x/6 = 0.91667
x = 6*0.91667 multiply both sides by 6
x = 5.50002
x = 5.5
MN = 5.5