Identify the required steps in the correct order

You want to migrate your Oracle 11g database as a pluggable database (PDB) in a multitenant container database (CDB).
Examine the steps required to perform the migration:
1. Use Data Pump export to perform a full transportable export on the source database with the export parameter VERSION=12.
2. Place all tablespaces in read-only mode on the source database.
3. Upgrade the source database to Oracle Database 12c.
4. Copy the dump file and data files to the desired location in the target database.
5. Create a new PDB in the target CDB.
6. Synchronize the PDB on the target CDB.
7. Use Data Pump import on the new PDB by using the full transportable import options.

Identify the required steps in the correct order.

A.
1, 5, 4, 7, and 6

B.
3, 2, 5, 1, 4, and 7

C.
2, 5, 1, 4, 7, and 6

D.
2, 1, 3, 5, 7, and 6