>>>Which is correct?
>>
>>Grammar.
>
>Thanks.
>Someone corrected me already.

Yep, I saw - too late. To console you, you're not alone there. I've seen this sentence at a website of a medical literature publisher, where they describe the rigorousness of the publishing process: "copy editor takes care of grammer".

Or, in one of the places where you can pass the TOEFL test, you can be kicked out for any suspicious activity "at the sole desecration of the manager".