LinkedHashSet and order of elements

[Barkat Mardhani]

A question for Dan's Collection exam:

Which of the following classes allow elements to be accessed in the order that they were added?
a. ArrayList
b. LinkedHashMap
c. LinkedHashSet
d. LinkedList
e. HashMap
f. HashSet
g. Hashtable
h. TreeMap
i. TreeSet
j. Vector
k. WeakHashMap
l. None of the above

The answer is d. I believe it should be c and d. What about a?

[Barkat Mardhani]

My mistake. I was looking at wrong answer.