Read the excerpt below and answer the question.
seemed very surprised to see i was wearing a black tie and she asked me if i was in mourning. i told her maman had died. she wanted to know how long ago, so i said, "yesterday." she gave a little start but i didn't say anything. i felt like telling her it wasn't my fault, but i stopped myself because i remembered that i'd already said that to my boss. (the stranger, part one, p. 20)

why is marie surprised that mersault's mother died the day before?
⚪ he is not busy with funeral arrangements.

⚪ he is going out with her and enjoying himself.

⚪ his apartment has none of his mother's belongings.

⚪ he seems too young for his mother to have passed away.