Which of the following statements about Erlang are TRUE? Check all that apply All functions in an .erl file are public by default, i.e. callable from the shell or from any other file All parameters in Erlang are generic by default, therefore a function such as the swap function shown before can be called with any data types When compiling the .erl file, the bytecode is generated and stored into a .beam file, which later on is executed by Erlang VM in a manner similar to Java in which .java files are stored as bytecodes into .class files before being executed by Java VM If a variable used in the function header is not used in the function body, the warning will be generated. There is no way to avoid this warning. All functions in Erlang return, even though no return statement is used, therefore even if a programmer writes a function in which the return does not matter, Erlang will return a value to the calling block, for example an "ok" statement