单选题

以下代码执行的结果是多少（）？

Question

以下代码执行的结果是多少（）？

		public class Demo {
	public static void main(String[] args) {
		Collection<?>[] collections = 
{new HashSet<String>(), new ArrayList<String>(), new HashMap<String, String>().values()}
				Super subToSuper = new Sub()
				for(Collection<?> collection: collections) {
	System.out.println(subToSuper.getType(collection))
}
}
abstract static class Super {
	public static String getType(Collection<?> collection) {
		return “Super:collection”
}
public static String getType(List<?> list) {
		return “Super:list”
}
public String getType(ArrayList<?> list) {
		return “Super:arrayList”
}
public static String getType(Set<?> set) {
		return “Super:set”
}
public String getType(HashSet<?> set) {
		return “Super:hashSet”
}
}
static class Sub extends Super {
	public static String getType(Collection<?> collection) {
            return "Sub" }
}
}

A. Sub:collection Sub:collection Sub:collection

B. Sub:hashSet Sub:arrayList Sub:collection

C. Super:collection Super:collection Super:collection

D. Super:hashSet Super:arrayList Super:collection