Which JSP code snippet must you use to declare this instance variable in the JSP Document?

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 snippet must 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>

Explanation: