What's Amazon's customer service idea?

A. It strives to be Earth's most customer-centric company, where people can find and discover anything they might want to buy online, and endeavors to offer its customers the lowest prices.
B. Amazon.com has acqiured a number of other companies over the years, all of which have helped them to become one of the most well-known and visited websites on the planet.
C. The world's brightest technology minds come to Amazon.com to research and develop technology that improves the lives of shoppers, sellers and developers around the world.