Gamma rays are sometimes used to detect flaws in metal structures such as bridges. Why are gamma rays more useful for this application than x-rays? O A. Gamma rays have a shorter wavelengths so they able to penetrate metal objects.
O B. Gamma rays have a lower frequencies so they able to penetrate metal objects.
OC. Metal objects absorb gamma radiation but they are not affected by X-rays.
OD. Metal objects reflect gamma radiation but they allow X-rays to pass through.