he following output iscreated by the FREQUENCY procedure:

        The FREQ Procedure

      Table of region by product

  region     product

  Frequency|

  Percent |

  Row Pct |

  Col Pct |corn    |cotton  |oranges | Total

  ---------+--------+--------+--------+

  EAST    |      2 |      1 |     1 |      4

           | 22.22 |  11.11 |  11.11 | 44.44

           | 50.00 |  25.00 |  25.00 |

           | 50.00 |  33.33 |  50.00 |

  ---------+--------+--------+--------+

  SOUTH   |      2 |      2 |     1 |      5

           | 22.22 |  22.22 |  11.11 | 55.56

           | 40.00 |  40.00 |  20.00 |

           | 50.00 |  66.67 |  50.00 |

  ---------+--------+--------+--------+

  Total           4        3       2        9

              44.44    33.33   22.22   100.00

Which TABLES statementwas used to completed the following program

that produced theoutput?

  proc freq data=sales;

  <_insert_code_>

  run;

     A. tables region product;

     B. tables region,product

     C. tables region/product;

     D. tables region*product;

这道题不应该是  tables region,product 制得得二维表吗，为什么答案是d呀？

有大佬能解答吗？