Is "change output" occurs for exact quantity transfer?

Question

Suppose, I have issued 5 quantity asset in  Address A. I have transferred 1 quantity asset to Address B.

Now, Address B sends entire 1 quantity to Address C, then as mentioned some of it comes back to the Address B or Address A in a "change output"? 

So, if Sender address is transferring the entire quantity of asset it has, then also "change output" transaction will occur?

Answer 1

Yes, there are always change outputs, because even if the change output contains no assets, it may be required to "spend" in future transactions to enable them to be signed.

Answer 2

This complete process acts like this:

Suppose A have a balance of total 5 units then if A has to transfer 1 unit then the whole 5 units are transferred from which 1 gets credited to B and the rest units of the change output gets back to A. And, now if B wants to send C then the complete balance of B is transferred and only the amount that you want to send to C is debited and rest will be credited back to B as the change output.