You are creating a new JSP page and you need to execute some code that acts when the page is firstexecuted， but only once. Which three are possible mechanisms for performing this initialization code？（）

• A、In the init method.
• B、In the jspInit method.
• C、In the constructor of the JSP’s Java code.
• D、In a JSP declaration， which includes an initializer block.
• E、In a JSP declaration， which includes a static initializer block.