A Source Of ${ }^{131} \mathrm{I}\left[\mathrm{t} \frac{1}{2}=8.05 \mathrm{~d}\right]$ Is Delivered to the Nuclear Medicine Department Calibrated for 100

Multiple Choice

A source of ${ }^{131} \mathrm{I}\left[\mathrm{t} \frac{1}{2}=8.05 \mathrm{~d}\right]$ is delivered to the nuclear medicine department calibrated for 100 mCi at 8:00 AM on Monday.If this radioactivity is injected into a patient at noon on Tuesday, what radioactivity will the patient receive?

A) 80 mCi
B) 85 mCi
C) 90 mCi
D) 95 mCi