Help on Composition R & HPhrases

Hi,

Here is my Question,

A mixture containing two components A(O+C) & B, another mixture containing components C & D.

To make A i need C to add in it then only it will be 100%

now my requirement is i maintained R & H phrases for C,

i want these R & H phrases to reflect for A material (O+C) in composition.

How these requirement to be achieved.

Thanks

Satya