Which of these is grammatically correct?

[skunk]

I think you just proved his point.

I was unaware that he had one.

 

[iMacmatician]

I was unaware that he had one.

Did you even read his posts?

 

[skunk]

Did you even read his posts?

Yes. I really can't be bothered with a point by point refutation, but his argument leaks like a sieve.

 

[iMacmatician]

Yes. I really can't be bothered with a point by point refutation, but his argument leaks like a sieve.

That's good then.

 

[Perk]

B. I think?