Read the following context and choose the best option to answer the question.
Context: I want to start off by thanking everyone for the wonderful birthday wishes that you sent me this past weekend ! I was incredibly blessed and quite overwhelmed by the significant response and all the encouraging thoughts and notes . Thank you ! Thank you for thinking of me!I I am still catching up here and have n't read all of them yet , but I surely will !
Question: Why did people send me birthday wishes ?
Options: 
- They wanted to make me do a lot of reading
 - None of the above choices .
 - They wanted to let me know they cared
 - They wanted to make me thank them


They wanted to let me know they cared