单选题

There are four types of radiation-matter interactions that can contribute to the total attenuation. These are ______.

A Compton scattering, pair production, photoelectric absorption, rayleigh scattering

B Compton scattering, electron exchange, photoelectric absorption, rayleigh scattering

C Electron exchange, pair production, photoelectric absorption, rayleigh scattering

D None of the above

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正确答案：A （备注：此答案有误）

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