MYSQL Group Replication

I have setup a Master-Master-Slave replication where say A B and C, I want to replicate data from A to B (which is working) and B to C (also working) and from A to C which is not working with two masters since one slave is configured to accept only one master.My query is how to configure slave to accept multiple masters.

I want to achieve the following structure :

Tables in Master 1
+--------------+
| Master1-DB   | 
+--------------+
| Table1       |
| Table2       |
| Table5       |
+--------------+

Tables in Master 2 where table 2 is replicated form master 1
+---------------------------+
| Master2-DB                | 
+---------------------------+
| Table1 From Master1       |
| Table3                    |
| Table4                    |
+---------------------------+

Tables in master 3 where table 1 is from Master 1 and table 2 is from Master 2 must be replicated.
+--------------------------+
| Slave-DB                 | 
+--------------------------+
| Table1 From Master1      |
| Table3 From Master2      |
| Table4 From Master2      |
| Table5 From Master1      |
+--------------------------+