企业为促进商品销售而在商品价格上给予的价格扣除属于商业折扣，商品销售涉及商业折扣的，应当按扣除商业折扣前的金额确定销售商品收入金额。( )

I would like to buy the black pen because I ___ that kind of pen ____ well.

A．have told; writes

B．have been told; writes

C．was told; wrote

D．have been told; is written