while (more input is available) { read a character if (the character is a '() push it on the stack else if ( the character is a ')' and the stack is not empty ) pop a character off the stack else print "unbalanced" and exit } print "balanced" Which of these unbalanced sequences does the above code think is balanced? Select one: O a.(((0)) b.(0))(0) OC(0))(0) Od(00)