Please answer the following question: Read the article and select the best answer. Article: Inventions named after people Many new things are invented each year. Interestingly, some inventions are named after the people who invented them, making the inventions and inventors easier to be remembered. The bowler hat is named after London hat-makers Thomas and William Bowler. The brothers received an order from Edward Coke, the younger brother of the 2ndEarl of Leicester. They were asked to design a hat for Coke's gamekeepers to protect _ heads from branches while on horseback. Later, the stylish hat became popular in Europe and the United States. Another invention that is named after its inventor is Braille, a writing system used by blind people. French educator Louis Braille developed a new system of reading and writing after learning the cryptography of French Captain Charles Barbier during the war. The captain had come up with a code of dots on paper that allowed soldiers to communicate in the dark. The diesel engine is also named after its inventor----German engineer Rudolf Diesel. After a few dangerous tests, he invented a new and more efficient engine in 1892 and the engine was later called the diesel engine. The engines were widely used in buses, trucks, trains and ships, and Rudolf Diesel became a millionaire. Question: What is the passage mainly about? Options: A: Several inventions that are named after their inventors. B: Several inventions that were invented by blind inventors. C: Several inventions that made their inventors rich. D: Several inventions that were invented by teen inventors.
Answer:
A