Regarding absorbed dose...
a. The correct unit for absorbed dose is the Sievert
b. Absorbed dose is a measure of the energy deposited in tissue per unit mass
c. Absorbed dose is a measure of the risk of exposure to ionizing radiation
d. Absorbed dose is defined only at the surface of the tissue we are interested in
e. For the same amount of X-rays falling on tissue, the absorbed dose will be the same irrespective of tissue type
