java translation

Question 172
Which two statements are true about the hashCode method? (Choose
two.)
A. The hashCode method for a given class can be used to test for
object equality and object inequality for that class.
B. The hashCode method is used by the java.util.SortedSet collection
class to order the elements within that set.
C. The hashCode method for a given class can be used to test for
object inequality, but NOT object equality, for that class.
D. The only important characteristic of the values returned by a
hashCode method is that the distribution of values must follow a
Gaussian distribution.
E. The hashCode method is used by the java.util.HashSet collection
class to group the elements within that set into hash buckets for
swift retrieval.

谁能给我翻译翻译各选项的意思吗？谢谢

问题：下面关于hashCode方法的描述哪两个是正确的？
A. 一个类的hashCode方法可以用来测试那个类的对象的相等性和不等性
B. java.util.SortedSet类用hashCode方法来排序集合中的元素
C. 一个类的hashCode方法可以用来测试那个类的对象的不等性，但是不能测试相等性
D. hashCode返回值的唯一重要特征是这些值必须符合高斯分布
E. java.util.HashSet类用hashCode方法来把集合中的元素分组，以达到快速查找的目的

equality和inequality我也不知道中文该怎么说，所谓的相等就是指a.equals(b)返回true就说明a和b相等