Q: In this task, you are given an input list A. You need to extract and sort the unique digits used in the list in ascending order. Return -1 if there is no digit in the list.
['217', '481', '87', 'w', 'q', 'c', 'j', '275', 'e', '49', '87', '25']
A:
1, 2, 4, 5, 7, 8, 9