如图所示，a为赤道地面上的待发射卫星，b为近地圆轨道卫星，c为地球同步卫星，已知三颗卫星的质量相同，三颗卫星的线速度分别为v_a、v_b、v_c，角速度分别为ω_a、ω_b、ω_c，周期分别为T_a、T_b、T_c，向心力分别为F_a、F_b、F_c，则

A．ω_a=ω_c＜ω_b

B．F_a=F_c＜F_b

C．v_a=v_c＜v_b

D．T_a=T_c>T_b

— But for your timely warning, we ____ into great trouble.

— You know we're friends. [ ]

A. would get

B. must have got

C. would have got

D. couldn't have got