Read the following context and choose the best option to answer the question.
Context: Even without being aware of his surroundings , he was sick of them . The biggest problem with his room was that it was too lonely . Leo finally stopped pacing to sweep his eyes over the vacant space .
Question: What is the best way to describe this room from these choices ?
Options: 
- It is problematic .
 - It is sick .
 - It is sad .
 - None of the above choices .


It is sad .