Why does the surgeon notice that Oliver's mother is not wearing a wedding ring in the book Oliver Twist?

In "Oliver Twist," the surgeon notices that Oliver's mother is not wearing a wedding ring because it suggests her status and circumstances. The absence of a wedding ring indicates that she may have been an unmarried woman or that her relationship was troubled, which adds to the mystery of her identity and the stigma surrounding her situation. This detail also reflects the themes of social class and the struggles of women in Victorian society.