I believe that the answer is A
C. Just had this question myself
The sounds of war can be heard in this poem. These sounds are carried by the drums and bugles and it reminds us there is a turbulence of war. The instruments symbolize the war message.
The poem is noticeable for its addressed message and the people it was addressed. The speaker mentions inanimate objects, like drums and bugles and he personifies these objects with calling them "you".
