Your airline boards passengers in 5 groups. After reviewing boarding's for a year, you have created the following spreadsheet. A B C D 1 Flyers Overhead bags Cumulative bags 2 Preboarding 10 5 5 3 1st class 30 28 33 4 Premium 50 22 55 5 Main Cabin 80 37 92 6 Discount fares 30 18 110 What is the probability of a passenger being in the first two boarding groups? Question 3 options: 40% 30% 20% 15%