45. Which of the following is TRUE? A. Every subset of a regular set is regular B. Every finite subset of a non-regular set is regular C. The union of two non-regular sets is not regular D. Infinite union of finite sets is regular
45. Which of the following is TRUE? A. Every subset of a regular set is regular B. Every finite subset of a non-regular set is regular C. The union of two non-regular sets is not regular D. Infinite union of finite sets is regular