All the following are true except:

a. Increasing the OID will always result in a noticeable density loss.
b. Increasing the OID will reduce the amount of scatter radiation reaching the IR at kVp levels above 60.
c. Increasing the OID when imaging an anatomic structure that creates significant scatter radiation will require the mAs to be increased 10% for every centimeter of OID elevation.
d. At tube potentials below 60 kVp, an increase in the OID has little if any effect on density.

ANS: A