Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make a gibson martini [title] Chill a cocktail glass if desired. [step] This can be done by filling a cocktail glass with ice, but remove the ice before adding or straining the ingredients into the glass, as the drink is not served on the rocks. [title] Add ice to a cocktail shaker.

Ending1: [step] Add equal parts club soda, mineral spirits, rum, or grapefruit juice as well as a pinch of lemon. [substeps] Shake your cocktail shaker for a count of 3 seconds, then pour in ice. Ending2: [step] You can do this by taping a round plate on top of the glass and filling it halfway to the top with ice cubes. Shake well (roughly an eighth measure). Ending3: [step] Add 1 cup of ice to the shaker. Measure 1/2 cup of all-purpose ice into the shaker. Ending4: [step] The shaker should be filled about half to three-quarters full. [title] Add the gin or vodka and vermouth to the shaker.

Answer format: ending1/ending2/ending3/ending4