题目是：
63. The following SAS program issubmitted:

  %macro COLS1;

     Name Age;

  %mend;     

  %macro COLS2;

     Height Weight;     

  %mend;     

  proc print data=SASHELP.CLASS;

     [_insert_VAR_statement_here_]      

  run;

WhichVAR statement successfully completes the program to produce a report containing  four variables?

A. var %COLS1 %COLS2;     

B. var %COLS1-%COLS2;     

C. var %COLS1 Weight Height;      

D. var Weight Height%COLS1;


我知道知道题目应该是和变量NAME AGE还有height weight后面的分号；有关，可不明白为啥是答案D? 求解答！谢谢啦