14. The following statements are true, EXCEPT. a. All integers are rational numbers. c. Zero is a real number. b. Non - integers are irrational numbers. d. Counting numbers and zero are whole numbers. 15. Which of the following statements is INCORRECT? a. All fractions are irrational. c. Whole numbers and negative numbers are integers. b. Zero is not a counting number. d. Rational and irrational numbers are real numbers