创建临时表空间组的命令是（）

A.create temporary tablespace temp1 tempfile ‘/home/oracle/oradata/temp1.dbf’ size 50Mtablespace group TEMP_GRP
B.create temporary tablespace temp1 tempfile ‘/home/oracle/oradata/temp1.dbf’ size 50M tablespace TEMP_GRP
C.create temporary tablespace group TEMP_GRP temp1 tempfile ‘/home/oracle/oradata/temp1.dbf’ size 50M
D.create temporary tablespace group TEMP_GRP tempfile ‘/home/oracle/oradata/temp1.dbf’ size 50M