Solution:
A TV with a screen resolution of 3840×2160 and above is called a UHD TV (Ultra High Definition TV), and a TV with a physical resolution of 3800×2160 is called a “4K TV”.
A TV with a screen resolution of 3840×2160 and above is called a UHD TV (Ultra High Definition TV), and a TV with a physical resolution of 3800×2160 is called a “4K TV”.