The Comparable interface is a functional interface that contains one method that takes one parameter. Which of the below

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The Comparable interface is a functional interface that contains
one method that takes one parameter. Which of the below is true
regarding how a class implements that one method? Choose ALL that
apply.
A. The method is expected to return a negative number if that
instance should be ordered after the parameter.
B. It should return a positive number if that object should be
ordered after the parameter
C. It should return a zero if that instance is equal to the
parameter
D. It should return the String value "less" if it should be
ordered before the parameter