Which the three EL expressions, inserted at line 15, are valid and evaluate to "3"? ()
A. ${vals.2 } B. ${vals ["2"]} C. ${vals.index } D. ${vals[index]} E. ${vals} [index] F. ${vals.(vals.index)} G. ${vals[vals[index-1]]}
A. Error B. Exception C. Throwable D. Request error E. Request exception
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.