妈妈买苹果用去7元4角，买梨用去4元7角，一共用去多少元钱？请选择CBA7Z:w-[/?(f:M:h*y6N6[8N8I.b0f)]6r9`0n2}5a
A．12元1角6N6[8N8I.b0f)]6r9`0n2}5a
B．3元7角6N6[8N8I.b0f)]6r9`0n2}5a
C．11元6N6[8N8I.b0f)]6r9`0n2}5a