Which term applies to how music notation is analyzed and written out?

a: historical musicology
b: music theory
c: musical parameter
d: orchestration

(i think it's a)

A: historical musicology

Explanation:

Hello! It is analyzed by historical musicology through its research process since the sign system used to transfer sounds to paper (musical notation) is not a modern invention, but the result of a long process, which has had multiple variants and whose results have been perfected in five centuries, from X to XVI.

i think it is d but idk

where and what are the statements?