This is the key signature for which MAJOR key?

Question

BlackTom AI · Accepted Answer

This item shows a treble clef with a key-signature containing two sharps placed on the F and C lines.

Option analysis conceptually:
- If a key signature has two sharps (F# and C#) in the major/minor system, the major key is D major and the relative minor is B minor. This is a standard rule: two sharps correspond to the key of D major.
- If the key were A major, the key signature would have three sharps (F#, C#, G#). Since only F# and C# are present, A major cannot be correct.
- For completeness, other two-sharp or more signatures follow different keys: one sharp is G major/E minor, two sharps is D major/B minor, three sharps is A major/F# minor, etc.

Why the displayed signature indicates D major rather than A major: the signature shows two sharps, not three; therefore the major key is D major, not A major.

Note: The question prompt claims the answer is A Major, which conflicts with standard music theory. Based on the visible key signature alone, the correct major key is D major.

This is the key signature for which MAJOR key?

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