Consider the following statement:
s1.compare (s2);
Which of the following statement is true about compare( ) function?
I. Returns 0 if s1 and s2 are equal
II. Returns -1 if s1 is greater
III. Returns -1 if s2 is greater
IV. Returns 1 if s1 and s2 are equal

Options

a) Both I and III
b) Both III and IV
c) Both I and II
d) I only

Answer : a) Both I and III