The answer is B. Becquerel.

Becquerel (Bq) is one of three units of measurement used to indicate radioactivity or how many atoms in the material decay or disintegrate in a specific amount of time. A Bq represents the rate of decay equal to one disintegration per second.  

Curie (Ci) is another measurement of radioactivity, but it signifies decay at a rate of 37 billion disintegrations per second. Therefore, 1 Ci = 37 billion Bq.  

Gray (Gy) is a unit of measurement for the absorbed dose of radiation and is equivalent to 100 rads.

Learn and expand your clinical knowledge with oncology nursing focused courses, books, and practice resources found at