—Is ______ your backpack?

—No, ______ isn't. It's ______ backpack. [ ]

A. this, this, your  

B. this , that, my  

C. that, it, my

某烟厂1月外购烟丝，取得增值税专用发票上注明税款为8.5万元，当月生产领用80%，期初尚有库存的外购烟丝2万元，期末库存烟丝12万元，该烟厂当月应纳消费税中可扣除的消费税是（）万元。（烟丝的消费税税率为30%）

A.6.8

B.9.6

C.12

D.40