Label the indicated parts of rifle and shotgun ammunition: bullet, gunpowder, primer.
a) A - Primer, B - Bullet, C - Gunpowder
b) A - Bullet, B - Gunpowder, C - Primer
c) A - Gunpowder, B - Primer, C - Bullet
d) A - Gunpowder, B - Bullet, C - Primer