Suppose objects a and b are from a user$-$defined class that implements the Comparable interface. Which condition tests the compareTo method$$s return value to determine that a will precede b when the sort method is called?

Group of answer choices

a$.$compareTo$($b$)==-1$

a$.$compareTo$($b$)>0$

a$.$compareTo$($b$)<0$

a$.$compareTo$($b$)==0$