<human>: Objective: How to make whipped cream at home?

Which of the following solutions is more sound in terms of naive physics reasoning?

OPTIONS:
- Fill jar with very cold cream, put on lid and shake for 3 min.  Then whip in 2 tablespoons of sugar into it.
- Fill jar with very cold cream,take off lid and shake for 3 min.  Then whip in 2 tablespoons of sugar into it.
<bot>: Fill jar with very cold cream, put on lid and shake for 3 min.  Then whip in 2 tablespoons of sugar into it.