Which if the following is a consequence of the identity sin 2x=2(sin x)(cos x ) ?

Asin y = (sin 1/2y)

Bsin 3y= 3( sin 2y)(cos y)

Csin 4y= 2( sin 2y) ( cos 2y)

Dsin 4y= 4 ( sin 2y) ( cos 2y)

Esin 8y= 2 ( sin 4y) (cos 2y)