Which three statements are true regarding the data types in Oracle Database 10g/11g?

Which three statements are true regarding the data types in Oracle Database 10g/11g?
(Choose three.)

A.
The value for a CHAR data type column is blank-padded to the maximum defined
columnwidth

B.
Only One LONG column can be used per table

C.
A TIMESTAMP data type column stores only time values with fractional seconds

D.
The minimum column width that can be specified for a VARCHAR2 data type column is
one

E.
The BLOB data type column is used to store binary data in an operating system file