What Mass of ¹⁴C, with a Half-Life of 5730 Y $280.0 \mathrm {~Bq} ?$

Multiple Choice

What mass of ¹⁴C, with a half-life of 5730 y, do you need to provide a decay rate of $280.0 \mathrm {~Bq} ?$ The mass of ¹⁴C is 14.00 u, and 1 u = 1.6605 × 10^-27 kg.

A) 1.70 × 10^-12 kg
B) 5.38 × 10^-19 kg
C) 3.84 × 10^-20 kg
D) 8.68 × 10^-13 kg