Which of the following statements is true? a) b) c) d) e) 1. a pre-test loop executes zero or more times a post-test loop executes zero or more times a pre-test loop executes one or more times a post-test loop executes one or more times both a) and d) 2. Which of the following is a valid method header? a) static void MethodA () b) static void MethodB (int a) c) static int MethodC d) e) all of the above a and b only which of the following C# statements support iteration? a) switch b) while c) repeat d) if e) a and d only 3, which of the following C# statements support selection? a) switch 4, b) while c) repeat d) if e) a and d only A C#for statement executes its components in the following order: a) initialize, modify, test, process b) initialize, process, modify, test c) initialize, test, modify, process d) initialize, process, test, modify e) none of the above 5