Data set options in SAS, such as KEEP= (to specify variables to keep in a dataset) and RENAME= (to

change the names of variables in a dataset), have specific rules for their usage:

A . The options must be placed in parentheses - This is correct. When specifying dataset options in

SAS, they must be enclosed in parentheses immediately following the dataset name, without any

spaces in between.

D . The options are placed after the data set name - This is also correct. Dataset options follow the

dataset name and are enclosed in parentheses to modify how SAS reads or writes the dataset in that

step.

Option B is incorrect because data set options are allowed in both DATA and PROC steps, provided

they are relevant to the procedure being used. Option C is incorrect because data set options can be

applied to both input and output datasets, depending on the context and specific operation being

performed.

Reference: SAS 9.4 Language Reference: Concepts.