Consider the Partial Date Class Below (Method Signatures and Instance

Multiple Choice

Consider the partial Date class below (method signatures and instance variables) which represents a day of the year: What is wrong with this design?

A) You cannot return this from a method.
B) It uses lastDayOfMonth, a private method of the class.
C) It has the side effect of changing the Date.
D) Since it returns a Date other than this one, the class is not consistent.