Setting a new limit?

How many documents does the following expression return?

list(db.prizes.find({"category": "economics"},
                    {"year": 1, "_id": 0})
     .sort("year")
     .limit(3)
     .limit(5))

3: the first call to limit takes precedence

5: the second call to limit overrides the first

none: instead, an error is raised

Exercise