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单项选择题 For manageability purposes， you have been told to add a "count" instance variable to a critical JSP Document so that a JMX MBean can track how frequent this JSP is being invoked. Which JSP code snippetmust you use to declare this instance variable in the JSP Document？（）

A、<jsp：declaration>int count = 0；<jsp：declaration>

B、<%! int count = 0； %>

C、<jsp：declaration.instance>int count = 0；. <jsp：declaration.instance>

D、<jsp：scriptlet.declaration>int count = 0；. <jsp：scriptlet.declaration>

  • A

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