The half-life of `Tc^(99)` is 6.0 hr. The total residual activity in a patient 30 hr after receiving an injection containing `Tc^(99)` must be more than 0.01 `muC_(i)`. What is the maximum activity `("in"muC_(i))` that the sample injected can have?
a) 0.16
b) 0.32
c) 0.64
d) 0.08

Options

A. 0.16
B. 0.32
C. 0.64
D. 0.08

Answer

B