How does SAS display missing values?

SAS handles missing values distinctively based on the data type of the variable. For numeric

variables, SAS represents missing values with a period (.). For character variables, missing values are

represented by a blank space. This handling is crucial for distinguishing between actual data entries

and absent data, particularly in statistical calculations and data processing. Options B, C, and D

incorrectly describe the representation of missing values in SAS, which does not use special

characters like 'N', 'C', or '$' for this purpose.

Reference:

SAS documentation on handling missing data, SAS Institute.