Which of the following corresponds to the most rapid nuclear decay?
a. t₁/₂ = 1.0 × 10 min
b. t₁/₂ = 1.0 × 10⁶ year
c. k = 1.0 × 10⁻³ /year
d. k = 1.0 × 10⁻¹ /day
e. k = 1.0 × 10⁻¹⁰