"Skysong, Inc. Income Statement Data:
a) What was the sales revenue for Skysong, Inc. in 2021?
b) What was the sales revenue for Skysong, Inc. in 2022?
c) How much did Skysong, Inc.'s sales revenue increase from 2021 to 2022?
d) What was the percentage increase in sales revenue from 2021 to 2022?"