Please choose the correct solution to the question: How to make whipped cream at home?

Solution1: Fill jar with very cold cream, put on lid and shake for 3 min.  Then whip in 2 tablespoons of sugar into it.

Solution2: Fill jar with very cold cream,take off lid and shake for 3 min.  Then whip in 2 tablespoons of sugar into it.

Answer format: solution1/solution2
Answer: solution1