make email template available for one case record type only

Hi, 

I have a requirement to only make a few email templates available when sending email from case, So if the case record type is A then only 4 email templates are available and if case record type is B then 10 templates are available. 

As we have users in different profiles but working on the same case record types I can't seem to find a way to do this. 

Is this possible and if so how? 

Thank You, 

Lorr

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