Final answer:
The claim that the final movement of Cantata No.140 is in a minor key is false; it is actually written in a major key.
Step-by-step explanation:
The statement that the final movement of Cantata No.140 is in a minor key is false. Cantata No.140, also known as 'Wachet auf, ruft uns die Stimme', was composed by Johann Sebastian Bach in 1731. This piece is one of his most famous church cantatas and it is often performed in religious and concert settings. The final movement of this seven-movement cantata is a chorale setting titled 'Gloria sei dir gesungen', and it is written in a major key, specifically in the same key as the opening chorus, providing a fitting and affirmative conclusion to the cantata.