Selecting count in LINQ

Question

I got a SQL Server table with columns ResolvedDate and ResolvedBy.

Now I want to select those two columns and count their results, which I

Answer 1

from a in dataContext.Activities
where a.IsResolved && a.ResolvedBy == userId
group a by a.ResolvedDate into g
select new {ResolvedOn=g.Key, NumberResolved= g.Count()}