Which chord is associated with the 1st String at the 9th Fret?

The chord associated with the 1st string at the 9th fret is B major. When you play the 1st string (high E string) at the 9th fret, you are producing a note that is B. Each fret on the guitar represents a half-step increase in pitch, so the 9th fret on the high E string produces the note B.

To form a B major chord, you require those specific notes of the B major triad: B, D#, and F#. The B note at the 9th fret on the 1st string is the root of the chord. When you add the necessary notes, typically from the 2nd fret of the 5th string (B), 4th fret on the 4th string (D#), and 4th fret on the 3rd string (F#) in a typical barre chord formation, you complete the B major chord.

The other choices do not correspond with the 1st string at the 9th fret in terms of the fundamental note being played or the chord composition. For example, choosing C major, D major, or A major would not yield the B note as a foundational tone, thereby demonstrating that