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？（）ApageContext.getAttribute（“foo”）；BgetPageContext（）.getAttribute（“foo”）；CpageContext.getApplicationScope（“foo”）；Dp
题目
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”）；