The correct answer is: A. Japan
NTSC (National Television Standards Committee) is a system for analog television broadcasting in the United States, Canada, Mexico, most of South America, most of Central America, the Caribbean, the Philippines, Taiwan, South Korea, and Japan. It is also used in some parts of Africa and Southeast Asia.
NTSC is a color television system that was developed in the United States in the late 1940s. It was the first color television system to be widely adopted, and it remained the dominant color television system in the world until the late 1990s.
NTSC uses a 525-line interlaced scanning system, with a frame rate of 30 frames per second. The color signal is encoded using a color subcarrier, which is added to the luminance signal.
NTSC has been criticized for its poor picture quality, particularly in comparison to other color television systems such as PAL and SECAM. However, NTSC is still widely used in many parts of the world, and it is likely to remain in use for many years to come.
The other options are incorrect because they are not countries that use the NTSC television standard.