The calculations, had they been done by hand, ______all practical value by the time they were finished.

A．had lost

B．would lose

C．should have lost

D．would have lost

根据下列资料完成36－40题 A公司和B公司签订一项购销合同，A公司向B公司开出一张30万元的银行汇票。B公司将汇票背书后向C公司转让，C公司又背书后向D公司转让。

如因受市场价格的影响，该业务的实际结算金额变为28万元，则( )。

A．该张汇票无效

B．银行以实际结算金额付款

C．刊登遗失声明

D．公示催告