120 of surveyed market customers confirmed that their average expense at the market is below 60 dollars. The null hypothesis is that 80% of market customers have the average expense below 60 dollars. How many people have we surveyed, if we rejected the null hypothesis in favor of the alternative hypothesis that less than 80% of customers spend less than 60 dollars at the market? Choose the minimum number of the correct choices.

140 people

260 people

180 people

220 people