"One reason scientists study and have visited the moon is that the moon may hold secrets about the composition of Earth when the moon was created." Which of the following sentences uses "composition" in the same way it is used in this sentence?

A.
Jordan’s skill with the piano was such that playing the composition required very little of his attention.

B.
Lauren enrolled in an AP composition course even though she knew that she would have to write many essays.

C.
The two parties in the lawsuit signed the composition agreed upon during trial.

D.
In his chemistry lab, Steve determined that the composition of the unknown sample was 40 percent lead, 10 percent tin, and 50 percent nickel.