Task: Question Answering
Input (English): A solution of lead (II) nitrate reacts with a solution of sodium iodide to produce a yellow solid of lead (II) iodide and aqueous sodium nitrate. Which of these illustrates the reaction?  
 (A) Pb(NO_{3})_{2}(aq) + 2NaI(aq) -> PbI_{2}(s) + 2NaNO_{3}(aq) (B) L_{2}N(aq) + SI(aq) -> L_{2}I(s) + SN(aq) (C) Pb_{2}N(aq) + NaI(aq) -> Pb_{2}I(s) NaN(aq) (D) Fe(NO_{3})_{2}(aq) + 2NaI(aq) -> FeI_{2} + 2NaNO_{3}(aq)
Output (English): A