00 6:56 AM tacomacc.instructure.com Quiz Instructions D Question 1 1 pts Account Consider the following mysterious method: Dashboard public static int mystery (int a) ( if (a s ) return mystery(-a) if (a8) return ; return a % 10 + mystery(a/10); Courses 28 Groups Which is the best description of what this method does? Reason about it and then try running it in Eclipse. Try calling it with a few arguments such as mystery(10), mystery 15), mystery(24), mysteryl-55). Calendar Inbox O Returns the first decimal digit of its argument Returns the sum of the digits of the argument if it is positive or overflows the stack if negative elp O O Returns the sum of the digits of the argument Returns the first digit of its argument plus the rest of the number divided by 10 O Not savedSubmit Quiz K