A(n) ________ performs actions on a workbook but doesn't necessarily return a specific value.

Given the following method, which of these method calls is valid?

``` public static void showProduct (int num1, double num2) { int product; product = num1 * (int)num2; System.out.println("The product is " + product); } ``` a. showProduct(5.5, 4.0); b. showProduct(10.0, 4); c. showProduct(10, 4.5); d. showProduct(33.0, 55.0);

The request-response technique should detect if a data communication transmission has been diverted.

Answer the following statement true (T) or false (F)