Barium is fed to patients in a suitable form before which ray test of the stomach, because . . .

• A. Barium allows X rays to pass through the abdomen due to its transparency to X rays.
• B. The barium compound like magnesium sulfate helps to clean the stomach before the X-ray test.
• C. Barium is a good absorber of X-rays and helps to see the abdomen (compared to other areas) clearly in the picture.
• D. Barium salts are white in color and this helps to see the abdomen clearly as compared to other areas in the picture.