Which of the following professional (s) are more likely to run the risk of a permanent change in their cell's DNA?1. Researchers using Carbon -14 isotope 2. X-ray technician 3. Coal miner 4. Dyer and painter Select the correct answer using the codes given below:

• A. 2 alone
• B. 1,2 and 3
• C. 1,2 and 4
• D. 1,3 and 4