下列表示对应化学反应的离子方程式正确的是（  ）

A．用氯化铁溶液腐蚀铜板：Cu＋Fe³⁺＝Cu²⁺＋Fe²⁺

B．Fe₃O₄与足量稀HNO₃反应：3Fe₃O₄＋28H⁺＋NO₃^-＝9Fe³⁺＋NO↑＋14H₂O

C．用小苏打治疗胃酸过多：NaHCO₃＋H⁺＝Na⁺＋CO₂↑＋H₂O

D．往KAl(SO₄)₂溶液中滴入Ba(OH)₂溶液至沉淀的物质的量最大：Al³⁺ + 2SO₄^2- + 2Ba²⁺ + 4OH^－="=" AlO₂^－+ 2BaSO₄↓+ 2H₂O 

—Where did you go last week? 

—I went to Zhang Aiping's hometown and visited the house ______ he was born in.  [ ]

A. that

B. there

C. who

D. whose