_____ is no doubt ______ you have to remain seated and fasten your seatbelt before the plane lands.

A．There; whether

B．It; that

C．There; that

D．It; whether

某公司年终分配申请到银行开立120份定活两便存单，柜员受理该笔业务，通过小批量开户，至少要经过（）完成该笔交易。

A.1次批量交易

B.2次批量交易

C.3次批量交易

D.4次批量交易