Final answer:
Beethoven's Symphony No. 5 is in a minor key and is an orchestral composition with four movements, not a solo piano piece, nor is it known as the 'Choral Symphony'.
Step-by-step explanation:
The statements that can be applied to Beethoven's Symphony No. 5 include that it is in a minor key (c) and it is definitely not known as the "Choral Symphony" (b), which is actually Beethoven's Symphony No. 9. Furthermore, Beethoven's Symphony No. 5 does not have five movements (a); it traditionally has four movements. Lastly, it is not primarily a solo piano piece (d); it is a full orchestral composition, one of the most celebrated in the classical repertoire. This symphony is famous for its short-short-short-long motif, which occurs at the very beginning and is often interpreted as 'fate knocking at the door'.