Given:
package com.example;
2.
3. public abstract class AbstractItem {
4. private String name;
…
13. }
Assume a concrete class com.example.ConcreteItem extends com.example.AbstractItem. A servlet sets a session-scoped attribute called "item" that is an instance of com.example.ConcreteItem and then forwards to a JSP page. Which two are valid standard action invocations that expose a scripting variable to the JSP page? (Choose two.)
A. <jsp:useBean id="com.example.ConcreteItem" scope="session" />
B. <jsp:useBean id="item" type="com.example.ConcreteItem" scope="session" />
C. <jsp:useBean id="item" class="com.example.ConcreteItem" scope="session" />
D. <jsp:useBean id="item" type="com.example.ConcreteItem" class="com.example.AbstractItem" scope="session" />
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