It’s A I just did the text
D. 3 beats in the measure because there’s two quarter notes (1 bt each) and two eighth notes (1/2 bt each); second measure has a half note (2 bts) and a quarter note (1 bt).
I think it’s people release
The frets could be somewhere alongside the neck. Some diagrams are in favor of vertically oriented, rather than horizontally. But they function the same way, just turn it 90 degrees clockwise. So, the answer is fretboard diagrams can be oriented vertically or horizontally.
