Consider the following method. public int locate(String str, String oneLetter)

{
int j = 0;
while(j < str. length() && str. substring(j, j+1).compareTo*oneLetter < 0)
{
j++;
}
return j;
}

Which of the following must be true when the while loop terminates?

a. j == str. length()
b. str. substring(j, j+1) >= 0
c. j <= str. length() || str. substring(j, j+1).compareTo(oneLetter) > 0
d. j == str. length() || str. substring(j, j+1).compareTo(oneLetter) >= 0
e. j == str. length() && str. substring(j, j+1).compareTo(oneLetter) >= 0