This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to buy wine for a crowd
Calculate how much wine you'll need.
The average guest will drink 2 glasses of wine per hour, with each pour being about 4 oz. ( 120 ml).

pick from the following. *Next, determine the delivery quality of the wine. Bottle sizes differ by country, so make sure the container you use works with both the size and quality of the wine. *Multiple the number of people attending your party by 2 (2 glasses each per hour) and then multiply that number by the approximate length, in hours, of the party. Therefore, if you have 20 guests, they'll consume 40 glasses of wine per hour. *Wide mouth glasses are recommended for smaller groups or more people, yet it can be as close as 3 oz. ( 170 ml) or more depending on the venue. *This number is about the size of a quarter glass of wine. For a bigger group of people, the standard round of wine will equal 4 oz.
The answer is:
Multiple the number of people attending your party by 2 (2 glasses each per hour) and then multiply that number by the approximate length, in hours, of the party. Therefore, if you have 20 guests, they'll consume 40 glasses of wine per hour.