[单选题]
The maximum force a pilk2j+( jco v hr/3ex.exot c5u9avf1jryc(dhg0b 3 an stand is about seven times his weight. What is the minimum radius of curvature that a jet plane's pilot, pulling outhgu9(c 3f ba5v1jy rd0 of a vertical dive, can tolerate at a speed of 250 m/s?
A. $4.25 \; m$
B. $3.64 \; m$
C. $1060 \; m$
D. $911 \; m$
