The incorrect statement is C. Data can only be exported in JSON or Avro format. BigQuery supports multiple export formats including CSV, JSON, Avro, Parquet, and ORC, making C false.

• A is true because BigQuery requires a wildcard for large exports to facilitate sharding.
• B holds true as Google Cloud Storage is indeed the only supported export destination.
• D is partially incorrect; while GZIP is a common compression option, BigQuery also supports SNAPPY and DEFLATE, making D a false statement as well. However, C is the most clearly false among the options provided.