— How can they inform Audrey of their project?

— _____ they had her email address.

 [ ]

A. What if

B. Only if

C. If only

D. Now that

某软土基坑，开挖深度H=5.5m，地面超载q₀=20kPa，地层为均质含砂淤泥质粉质粘土，土的重度γ=18kN/m³，黏聚力c=8kPa，内摩擦角ψ=15°，不考虑地下水的作用，拟采用水泥土墙支护结构，其嵌固深度I_d=6.5m，挡墙宽度B=4.5m，水泥土墙体的重度γ=19kN/m³.按照《建筑基坑支护技术规程》JGJ120-2012计算该重力式水泥土墙抗滑移安全系数，其值最接近下列哪个选项？（）

A.1.0

B.1.2

C.1.4

D.1.6