单选题：Which most closely matches a description of a Java Map?

Which most closely matches a description of a Java Map? @[D](2)

A. A vector of arrays for a 2D geographic representation
B. A class for containing unique array elements
C. A class for containing unique vector elements
D. An interface that ensures that implementing classes cannot contain duplicate keys




A.A vector of arrays for a 2D geographic representation
B.A class for containing unique array elements
C.A class for containing unique vector elements
D.An interface that ensures that implementing classes cannot contain duplicate keys


答案：D