Plz help..

Hello friends..

I have a doubt, Plz make me clear..

One of my friend gave IPCC Group-I exam in May,11 but he couldn't clear but he got exemption in Tax. He got 63 marks in Taxation. Then he gave exam in Nov,11. This time he couldn't clear & got exemption in another subject, i.e. Costing-fm. Now he got 67 marks. 

Now my Question is, when he give exam in May,12, whether exemption for both of the subjects (Tax & Costing-fm ) or for any one subjects will be allowed?

Plz tell me.

Thanks in advance.