创建临时表空间组的命令是（ ）。
Acreate temporary tablespace temp1 tempfile ‘/home/oracle/oradata/temp1.dbf’ size 50Mtablespace group TEMP_GRP;
Bcreate temporary tablespace temp1 tempfile ‘/home/oracle/oradata/temp1.dbf’ size 50M tablespace TEMP_GRP;
Ccreate temporary tablespace group TEMP_GRP temp1 tempfile ‘/home/oracle/oradata/temp1.dbf’ size 50M;
Dcreate temporary tablespace group TEMP_GRP tempfile ‘/home/oracle/oradata/temp1.dbf’ size 50M;