Assume the tag handler for a st：simple tag extends Simple Tag Support. In what way can scriptlet code beused in the body of st：simple？（）
- ASet the body content type to JSP in the TLD
- BScriptlet code is NOT legal in the body of st：simple.
- CAdd scripting-enabled="true" to the start tag for the st：simple element
- DAdd a pass-through Classic tag with a body content type of JSP to the body of st：simple， and place the scriptlet code in the body of that tag