Express the Sum or Difference as a Product of Sines $\sin ( 8 \theta ) - \sin ( 4 \theta )$

Multiple Choice

Express the sum or difference as a product of sines and/or cosines.
- $\sin ( 8 \theta ) - \sin ( 4 \theta )$

A) $2 \sin ( 2 \theta )$
B) $2 \sin ( 2 \theta ) \cos ( 6 \theta )$
C) $2 \cos ( 4 \theta ) \cos ( 6 \theta )$
D) $2 \sin ( 6 \theta ) \cos ( 2 \theta )$