D I believe. I’m not %100 percent sure.
<span>SmartArt can be used to create graphic organizers (Solution:B) that highlight relationships between two items. With SmartArt you can make visual representation of your ideas and information. The tool SmartArt is available </span>in Excel, PowerPoint, Word, but also you create SmartArt object in Outlook.
There are different layouts available for this type of representation.