My sister threw me the most wonderful baby shower I could ever ask for on Saturday ! All of my really great friends attended it , and we all had a blast ! ! We played some really great games like guess the baby food in the unlabled container . I swear they all were carrots .

Generate a question about the above context.
What was the narrator celebrating ?
Choose from: (I) A friend 's wedding .; (II) A friend 's pending child .; (III) A friend 's new boyfriend .; (IV) A friend 's birthday .;