Read the following context and choose the best option to answer the question.
Context: I talked to my landlord and she said they 'd been living there since September 1st and just had n't gotten around to notifying me yet . She said there was n't much of the deposit left because she used it for all of August AND for advertising ( Pennysaver , Craigslist , things like that ) . Then she said that she had 21 days to give me the remainder back after I gave her the keys .
Question: What may happen if she does nt get back her deposit ?
Options: 
- None of the above choices .
 - She may take the money from the landlords bank .
 - She may sue the landlord for free rent for a year .
 - She may take the landlord to court and sue .


She may take the landlord to court and sue .