Oracle Exam 1Z0-497 Topic 9 Question 62 Discussion

Your customer has three data centers in three different locations, location A has their production database running on Oracle Database 12c. They want to replicate the data from location A to location B. which is 50 miles away and is used for disaster protection and database rolling upgrades. They also want to create a replica database at location C, which must be open in read-write mode, while synchronizing with the primary database.

Which two solutions would you recommend to your customer?