Question 10 (1 point) What is the expression a + b * c // 5 equivalent to? a) ((a + b) * c) // 5 b) a + ((b + c) // 5) c) (a + b) * (c // 5) (d) None of the above Question 12 (1 point) Which of the following are useful tips for testing a program? a) Keep a copy so it can be reused whenever the program is modified. b) Test for "extreme conditions." c) Make the test data "self-checking." d) All of the above Question 14 (1 point) Which of the following is/are true of an algorithm? a) It may be represented using a flowchart b) Some algorithms may be implemented to execute on a computer c) It is a step-by-step procedure for solving a problem d) All of the above