Write the name and symbol of the daughter nucleus produced when bismuth-211 (²¹¹Bi) undergoes α-decay.

• A. Polonium; ²⁰⁹Po
• B. Lead; ²⁰⁸Pb
• C. Thallium; ²⁰⁷Tl
• D. Thallium; ²⁰⁶Tl

Answer: (C)