Riding Along the Road on Your Bicycle,you Make a Sharp

Riding along the road on your bicycle,you make a sharp right turn,hit some gravel,and tumble to the ground striking your shoulder.You are in a lot of pain.Worrying that you might have broken your shoulder blade or a rib,you walk your bike to the nearby hospital for emergency care.
-Your doctor orders X-rays taken of your upper chest and back.As you lay down and prepare for the X-ray to be taken,a lead blanket is rested over your lower abdomen.The assistant placed the lead blanket on your abdomen to

A) reflect the X-rays to your shoulder.
B) shield your gonads from irradiation.
C) push you firmly against the table for a clear photo of your chest.
D) steady you,so that you do not move as they take the X-ray image.