The answer is c
Hope this answer correct :)
In my personal opinion art is a little easier than science since im more on the creative side :)
Yes it would be okay. You are only using it for 2 things. Not everything.
Answer:A brace is used to join multiple staves that represent an instrument, such as a piano, organ, harp, or marimba. Sometimes a second bracket is used to show instruments grouped in pairs, such as the first and second oboes or first and second violins in an orchestra.
Explanation: