The pie chart below depicts the beverage size customers choose while at a fast food restaurant. complete parts (a) through (c). a pie chart titled "most popular beverage sizes at a restaurant" contains four sectors, each labeled with a beverage size and a percentage as follows: xl, 21%; small, 13%; medium, 60%; large, 6%. the sectors’ relative sizes correspond with the percentage labels. most popular beverage sizes at a restaurant xl 21% small 13% medium 60% large 6% (a) what is the most popular size? what percentage of customers choose this size?