68.The following SAS program is submitted:

  data WORK.ACCOUNTING;
     set WORK.DEPARTMENT;
     length EmpId $6;
     CharEmpid=EmpId;
  run;

If data set WORK.DEPARTMENT has a numeric variable EmpId,which statement is true about the output dataset?

     A. The type of the variable CharEmpid is numeric.
     B. The type of the variable CharEmpid is unknown.
     C. The type of the variable CharEmpid is character.
     D. The program fails to execute due to errors.

Answer: D
这里主要是LENGTH定义数据的格式与WORK.DEPARTMENT中的数据格式存在冲突。