Camel or Pascal for Method Fields or Parameters Coding Standard

Question

What is best practice for method fields or parameters (Camel or Pascal):

public string DoSomething(string documentName, string firstName)
{
    return string.Empty;    
}

public string DoSomething(string DocumentName, string FirstName)
{
    return string.Empty;    
}

Answer 1

You should use camelCasing for parameter names. So option number 1 is correct.
It is actually not even a matter of opinion, as seen by the msdn link provided in the comments: