单选题Assume a tag handler extends TagSupport. Which is used within the tag handler to get an attribute “foo” that is in the application scope？（）A pageContext.getAttribute（“foo”）；B getPageContext（）.getAttribute（“foo”）；C pageContext.getApplicationScope（“foo”）；D pageContext.getAttribute（“foo”，pageContext.APPLICATION_SCOPE）.getAttribute（“foo”）；E getPageContext（）.getScope（pageContext.APPLICATION_SCOPE）.getAttribute（“foo”）；
单选题
Assume a tag handler extends TagSupport. Which is used within the tag handler to get an attribute “foo” that is in the application scope？（）
A
pageContext.getAttribute（“foo”）；
B
getPageContext（）.getAttribute（“foo”）；
C
pageContext.getApplicationScope（“foo”）；
D
pageContext.getAttribute（“foo”，pageContext.APPLICATION_SCOPE）.getAttribute（“foo”）；
E
getPageContext（）.getScope（pageContext.APPLICATION_SCOPE）.getAttribute（“foo”）；
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