Read the following paragraph and answer the question. Give ONLY the answer, no other words or explanation.

For example:

Answer: <most likely answer, as short as possible>.

Paragraph: and I got to see Abby again , who got an ADORABLE haircut . she 's so cute . Cosplaying blew . The quality of costumes went down-- again . although the ones that were good were AMAZING .

Question: What may be the reason the quality of the costumes is down ?
None of the above choices .
Unknown, mentioned but not explained.