Linq to select select top 1

I need to get a row from my gneic list where the BusDate is less than a variable date.
The qualifying date should be the max date returned, instead I get the lowest date that qualifies to be less than s.BusDte
I tried first or default

SomeObject s

var result = (from q in list
                                   where q.ID.ToString() == s.ID && q.BusDate <= s.BusDate
                                   select q.Total).Take(1).LastOrDefault();