What clues tell the reader that yellow wallpaper by Charlotte Perkins Gilman is written in the first person point of view

The main character uses the pronouns I and my.
In The Yellow Wallpaper, we know that the text is written from the first-person point of view because the main character uses the pronouns "I" and "my" when telling the story. Telling a story from the first-person point of view has several advantages. It can allow the reader to get to know the thoughts of a character more deeply. It also allows imagery to be more vivid, and the character's motivations and desires to be better explained.

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