The half life of `I""^(131)` is 8 day. Given a sample of `I""^(131)` at t=0, we can assert that a)No nucleus will decay at t=4day b)No nucleus will decay before t=8day c)All nucleus will decay before t=16day d)A given nucleus may decay before

Options

A. No nucleus will decay before t=4 days
B. No nucleus will decay before t=8 days
C. All nuclei will decay before t=16 days
D. A given nucleus may decay at t=0

Answer

D