[单选题]
The maximum force a 8xx1y-bwio . tpilot can stand is about seven times his weight. / yz8vwd,n36elfgvd j 8w+dv7What is the minimum radius of curvature that a jet plane's pilot, pulling out of a vertical dive, can to6wvfdzevynw3/ , 8v g7jdl+d8 lerate at a speed of 250 m/s?
A. $4.25 \; m$
B. $3.64 \; m$
C. $1060 \; m$
D. $911 \; m$
