The Nobel Prize in chemistry was awarded to three scientists for their discovery that plastic can be made electrically conductive--an advance that has led to improvements in film, television screens, and windows.

• Athat plastic can be made electrically conductive--an advance that has led  
• Bthat plastic can be made electrically conductive--this advance leading  
• Cthat plastic can be made to be electrically conductive, and this advance led  
• Dof plastic's ability to be made electrically conductive, with this advance leading  
• Eof plastic being able to be made electrically conductive--an advance that has led