[OpenSER-Users] About efficiency in conditionals

Hi, I'm wondering which solution (A or B) is more efficient in case method is NOT an INVITE:

A) if ( (method=="INVITE") && (isflagset(5) || isbflagset(6)) )

B) if ( mehtod=="INVITE" )

My question is: Is faster B because does less comparasions? or does OpenSer break A conditional during first condition (method=="INVITE") because it's false so then A and B are equally efficient?

And which is more efficient (C or D) when all the conditions are true?

C) if ( (method=="INVITE") && (isflagset(5) || isbflagset(6)) ) { ....

D) if ( method=="INVITE" ) { if ( (isflagset(5) || isbflagset(6)) ) { ...

Thanks for any explanation. Best regards.