Which of the following elements act as donor impurities? 1. Gold2. Phosphorus3. Boron4. Antimony5. Arsenic6. IndiumSelect the correct answer using the codes given below:

• A. 1, 2, 3
• B. 1, 2, 4, 6
• C. 3, 4, 5, 6
• D. 1, 4, 5