Which the two are true about the JSTL core iteration custom tags？（）
- A It may iterate over arrays， collections， maps and strings.
- B The body of the tag may contain EL code， but not scripting code.
- C When looping over collections， a loop status object may be used in the tag body.
- D It may iterate over a map， but only the key of the mapping may be used in the tag body.
- E When looping over integers （for example begin1=’1’ end=’10’）， a loop status object may not be used in the tag body.