Which two are true？（）

• A、 The function method must have the signaturepublic： String spin（）.
• B、 The method must be mapped to the logical name “spin” in the web.xml file.
• C、 The function method must have the signature：public String spinIt（）.
• D、 The function method must have the signature：public static String spin（）.
• E、 The function method must have the signature：public static String spinIT（）.
• F、 The function class must be named Spinner， and must be in the package com.example.