You executed the following command to create a tablespace called SALES_DATA： > CREATE TABLESPACE sales_data DATAFILE SIZE 100M SEGMENT SPACE MANAGEMENT AUTO； Which two statements are true about the SALES_DATA tablespace （）
- AThe database automatically determines the extent-sizing policy for the tablespace.
- BThe segments are automatically shrunk when the contents are removed from them.
- CThe allocation of extents within the tablespace is managed through the dictionary tables.
- DThe space utilization description of the data blocks in segments is recorded inbitmapblocks.
- EThe space utilization description of the data blocks in segments is managed through free lists.MANUAL