One of the use cases in your web application uses many session-scoped attributes. At the end of the usecase，you want to clear out this set of attributes from the session object. Assume that this static variableholds this set of attribute names：
201.private static final Set USE_CASE_ATTRS； 
202.static {
203.USE_CASE_ATTRS.add（"customerOID"）；
204.USE_CASE_ATTRS.add（"custMgrBean"）；
205.USE_CASE_ATTRS.add（"orderOID"）；
206.USE_CASE_ATTRS.add（"orderMgrBean"）；
207.}
Which code snippet deletes these attributes from the session object？（）

A web component accesses a local EJB session bean with a component interface of com.example.Accountwith a home interface of com.example.AccountHome and a JNDI reference of ejb/Account.
Which makesthe local EJB component accessible to the web components in the web application deployment descriptor？（）