Iron, Lead, Nitrogen

• A. <p><img src="https://static.examsbook.com/uploads/61976302f1bfa7a357165392cbd00ad4444087cf.jpg" style="width:164px;display:block;vertical-align:top;margin:5px auto;text-align:center;height:164px" width="164" height="164"></p>
• B. <p><img src="https://static.examsbook.com/uploads/fc33276109450d0fc419c0aa40702704f5f7c9a4.jpg" style="width:166px;display:block;vertical-align:top;margin:5px auto;text-align:center;height:166px" width="166" height="166"></p>
• C. <p><img src="https://static.examsbook.com/uploads/022bf4908a33989de1f8d71545942e5979152c7e.jpg" style="width:176px;display:block;vertical-align:top;margin:5px auto;text-align:center;height:176px" width="176" height="176"></p>
• D. <p><img src="https://static.examsbook.com/uploads/7f22b87034e7f26ff64cb4ce0fa06dcc3338d70c.jpg" style="width:179px;display:block;vertical-align:top;margin:5px auto;text-align:center;height:179px" width="179" height="179"></p>
• E. <p><img src="https://static.examsbook.com/uploads/d67277478cc469a7e726e58af24d0a03b70426b0.jpg" style="width:163px;display:block;vertical-align:top;margin:5px auto;text-align:center;height:163px" width="163" height="163"></p>