Which statement correctly describes the units used for absorbed dose and dose equivalents, and their relation?

Which statement correctly describes the units used for absorbed dose and dose equivalents, and their relation?

• A. Absorbed dose in Sieverts; dose equivalent in Grays.
• B. Absorbed dose is measured in Gray (Gy); dose equivalent and effective dose are measured in Sievert (Sv). 1 Gy × radiation weighting factor = Sv; effective dose sums organ doses using tissue weighting factors.
• C. Absorbed dose in rem; dose equivalent in sieverts; no relation.
• D. Absorbed dose in Grays; dose equivalent in Grays; multiply by exposure time.

Answer: (A)