Java quiz. Which collection classes from Java library extend

Which collection classes from Java library extends AbstractCollection class?

HashSet
HashMap
ArrayList
PriorityQueue
SortedSet
NavigableMap

1. HashSet extends AbstractSet, which extends AbstractCollection.
2. ArrayList extends AbstractList, which also extends AbstractCollection.
3. PriorityQueue extends AbstractQueue, which also extends AbstractCollection.
HashMap extends AbstractMap, which is not related to AbstractCollection
4. SortedSet and NavigableMap are interfaces of collections framework.