Please choose the correct ending to complete the given sentence: Making a lemonade: A bowl with three cups of cold water, a cup of lemon juice, a cup of water and a cup of sugar are on at table. Then, a person adds sugar, and lemon to pot with water to warm. then

Ending1: , the person adds the sugar again, and water puts to boiling water to boil. Ending2: , the pot with the half, only half bowl of water and the two cup of water, to make cookies. Ending3: , the person adds the lemonade to a jar and serves in a cup. Ending4: , the person spread lemon slices to chop with a steel rod.

Answer format: ending1/ending2/ending3/ending4