Alter the datatypes in the Source Qualifier

Under what circumstances is it desirable to alter the datatypes in the Source Qualifier?

Choose Answer

(A)
When the precision required by the mapping is less than the precision of the data stored in the table or flat file being read by the Source Qualifier.
(B)
When the precision required by the mapping is greater than the precision of the data stored in the table or flat file being read by the Source Qualifier.
(C)
To alter the way the source database binds data when it is imported into the mapping.
(D)
Never. The datatypes in the Source Qualifier and the corresponding source(s) must match.