The correct answer is A. August 12, 1981.
The IBM Personal Computer (PC) was a personal computer introduced in 1981 by IBM. It was one of the first successful mass-produced personal computers and is considered to be one of the most important developments in the history of computing. The PC was designed to be a low-cost, easy-to-use computer for business and home use. It was based on the Intel 8088 microprocessor and ran the MS-DOS operating system. The PC was a major success, and it helped to popularize the personal computer.
The IBM PC was not the first personal computer, but it was the first to be widely adopted by businesses and consumers. It was also the first personal computer to be based on a standard architecture, which allowed for the development of a wide range of compatible software and hardware. The PC’s success helped to create the personal computer industry, and it is still one of the most popular personal computer platforms in the world.
The other options are incorrect because they are not the dates on which the IBM Personal Computer was debuted.