A Compton-Scattered X-Ray Photon Has Less Energy Than the Incident

Multiple Choice

A Compton-scattered x-ray photon has less energy than the incident photon. The scattered photon therefore

A) has the same wavelength as the incident photon.
B) has a longer wavelength than the incident photon.
C) has a shorter wavelength than the incident photon.
D) cannot be assigned a wavelength.
E) has none of these wavelengths.