第 33 题 (多选题)： In the PROMOTIONs table, the PROMO_BEGIN_DATE column is of data type DATE and the default date format is DD-MON-RR Which two statements are true about expressions using PROMO_BEGIN_DATE contained in a query.

A. PROMO_BEGIN_DATE- SYSDATE will return a number . B. TO_DATE(PROMO_BEGIN_DATE * 5) will return a date. C. TO_NUMBER(PROMO_BEGIN_DATE - 5) will return a number . D. PROMO_BEGIN_DATE- SYSDATE will return an error . E. PROMO_BEGIN_DATE- 5 will return a date 显示答案