This is a question with answer options. Goal: To clean a watch dial,

Which of the following methods is more reasonable for accomplishing this goal?

Available options:
-- make sure that the dial is separated from the watch, and take a can of compressed air and gently blow any dust off. Use rubbing alcohol and a towel to wipe any smudges off the dial.
-- make sure that the dial is separated from the watch, and take a can of compressed air and gently blow any dust off. Use soapy water and a towel to wipe any smudges off the dial....I think the answer is
make sure that the dial is separated from the watch, and take a can of compressed air and gently blow any dust off. Use rubbing alcohol and a towel to wipe any smudges off the dial.