The book has been well received, but ______ actual sales, it hasn’t been very successful.

A．thanks to

B．in terms of

C．according to

D．regardless of

商品房预售合同应当由( )向房产管理部门和土地管理部门办理登记备案手续。

A．预售人

B．预购人

C．预售合同约定的一方

D．预售人和预购人共同