It 's only nine and I am already bored . Today I am going to celebrate a belated birthday ... that should be interesting . I have an essay due that I have n't started . I planned on doing it all today but then again I was smart enough to forget my movie and text book .
According to the above context, choose the best option to answer the following question.
Question: Why is the person celebrating this event ?
Options:
- It 's the anniversary of their inception into the world .
 - It 's the anniversary of their marriage .
 - None of the above choices .
 - It 's the anniversary of their hiring .


It 's the anniversary of their inception into the world .