A Bullet Is Fired from a Rifle

A bullet is fired from a rifle.The end of the barrel is a circular aperture.Is diffraction a measurable effect?

A) yes
B) no,because the de Broglie wavelength of the bullet is too large relative to the aperture
C) yes,because the aperture may be a slit or circular aperture
D) no,because the de Broglie wavelength of the bullet is too small relative to the aperture