Transcription: In this example, functions C and D are not valid because a type that appears in the argument list of the template does not appear in the argument list of the function. It is not enough to use a parameterized type for the return value of the function or to use it inside the body of the function. The function D also cannot work because the type V is not one of the template arguments. The function E is not valid because a parameterized The characterized type can appear only once in a template argument list.