Write the nuclear equation when bismuth-210 nuclide undergoes beta decay.

• A. ²¹⁰₈₃Bi → ⁰_–1β + ²¹⁰₈₄Po
• B. ²¹⁰₈₃Bi → ⁰₊₁β + ²¹⁰₈₂Pb
• C. ²¹⁰₈₃Bi → ^–1₀β + ²⁰⁹₈₃Bi
• D. ²¹⁰₈₃Bi + ⁰_–1β → ²¹⁰₈₂Pb

Answer: (A)