In VBA, a procedure that calls a function is called the referencing procedure

Characters or symbols that perform operations on one or more operands are:

a. separators b. op codes c. operators d. key words e. None of these

What is the meaning of ( ) in the following lambda? () -> System.out.println("Welcome to lambdas!")

a. the lambdas parameters are inferred b. the lambdas parameters are supplied by a method reference c. the lambda has an empty parameter list d. the given expression is not a valid lambda