Which statement is true about NTSC video?

Which statement is true about NTSC video?

• A. It uses a 60 Hz refresh rate
• B. It uses a 120 Hz frame rate
• C. It has an aspect ratio of 4:3
• D. It uses 16:9 aspect ratio

Answer: (C)

The main idea here is the picture shape that NTSC video was designed for. Classic NTSC broadcasts were created for a 4:3 image, meaning the frame’s width-to-height ratio is 4:3. That’s why traditional NTSC content fills a 4:3 display without letterboxing. While NTSC does run at a field rate near 60 Hz (and about 29.97 frames per second when interlaced), these timing details don’t define the image’s shape. Widescreen 16:9 comes with later standards (HDTV and digital SD), and 120 Hz isn’t part of the NTSC timing. So the statement about a 4:3 aspect ratio correctly identifies NTSC’s classic presentation.

The main idea here is the picture shape that NTSC video was designed for. Classic NTSC broadcasts were created for a 4:3 image, meaning the frame’s width-to-height ratio is 4:3. That’s why traditional NTSC content fills a 4:3 display without letterboxing. While NTSC does run at a field rate near 60 Hz (and about 29.97 frames per second when interlaced), these timing details don’t define the image’s shape. Widescreen 16:9 comes with later standards (HDTV and digital SD), and 120 Hz isn’t part of the NTSC timing. So the statement about a 4:3 aspect ratio correctly identifies NTSC’s classic presentation.