Is it safe to resize the WindowsRE hard drive partition?

Here's my situation. My computer is running Windows 8.1 There is only 1 physical HD, but it has many partitions. Here is a picture of my current HD setup Attachment 46279 (http://www.eightforums.com/attachments/installation-setup/46279-safe-resize-windowsre-hard-drive-partition-hard-drive.png) The problem is that the WRE partition is literally sitting between my C and D drives, so when I shrink the C drive partition, I cannot extend the D drive with...