A：加8
B：乘8
C：乘3
某无色溶液含有下列离子中的若干种：H+、NH4+、Fe3+、Ba2+、Al3+、CO32–、Cl–、OH–、NO3–。向该溶液中加入铝粉，只放出H2，则溶液中能大量存在的离子最多有（ ）
—Dad, I'll be in the final singing competition tomorrow.
—Be careful not to get a sore throat and your voice.
