The momentum of photons corresponding to the minimum wavelength emitted from x-ray tube whose operating voltage is 120 kV is（）

The momentum of photons corresponding to the minimum wavelength emitted from x-ray tube whose operating voltage is 120 kV is（）
A.5.225X10-23 N·m
B.4.783X10-14 N·m
C.4.175X10-24 N·m
D.6.396X10-23 N·m
正确答案：6.396X10-23 N·m