Question Type
Mutliple choice question
Question
How many horizontal lines are present in each frame of NTSC video?
Answer
No
425
Yes
525
No
24
No
29.97
Old Node ID
3889
Answer Json
{answers:[{answer:425,img:},{answer:525,img:},{answer:24,img:},{answer:29.97,img:}],correct:2}
Old Lesson reference ID
1295