1. Prepare common-sized income statements for Years 1 and 2. Round your answers to one decimal place. Delta Air Lines, Inc. Common-Sized Income Statement For Years 1 and 2 1. Prepare common-sized income statements for Years 1 and 2 . Round your answers to one decimal place. Delta Air Lines, Inc. Common-Sized Income Statement For Years 1 and 2 2. What is the primary cause of the decrease in operating income in Year 2 ? 1. Prepare common-sized income statements for Years 1 and 2. Round your answers to one decimal place. Delta Air Lines, Inc. Common-Sized Income Statement For Years 1 and 2 1. Prepare common-sized income statements for Years 1 and 2 . Round your answers to one decimal place. Delta Air Lines, Inc. Common-Sized Income Statement For Years 1 and 2 2. What is the primary cause of the decrease in operating income in Year 2