It is in view of our standing business relationship that we

It is in view of our standing business relationship that we make you such a
(A) 由于我们双方标准的贸易关系,我方才向你方作出如此报盘.
(B) 考虑到我们双方停止不前的商贸关系,我方才向你方给出如此报盘.
(C) 正是由于我们双方固定的商贸关系,我方才向你方给出如此还盘.
(D) 正是鉴于我们双方长期的贸易关系,我方才向你方作出如此还盘.
选哪个,我觉的选A.说明你的理由!