You have a domain that was created and configured with WebLogic 10.3.5. You want to upgrade the domain to use WebLogic 12c. Which Oracle tool must you use to upgrade your domain? 

Answer options:

A. Oracle WebLogic Domain Upgrade tool
B. Smart Update
C. Smart Upgrade
D. No tool required, just install WebLogic 12c, update the domain to point to the new WebLogic installation and start your domain.
E. JDeveloper

D

Note: You can use the 12.1.1 WebLogic Upgrade Wizard to upgrade domains created in WebLogic Server 8.1. You can also use the WebLogic Upgrade Wizard to upgrade a WebLogic domain created in WebLogic Server 9.x or 10.x to 12.1.1, but this is optional.