[单选题]
A jumper in the long-j7+ l vdvw89dutc n0+soump goes into the jump wit o(x9g:i; p 1mq:qtynw50n8ohj.r sdph a speed of 12 m/s at an angle of dt0o (gp i9.qn: h:wxsqmj 5rno8p;1y$20^{\circ}$ above the horizontal. How far does the jumper jump?
A. $6.14 \; m$
B. $8.22 \; m$
C. $9.45 \; m$
D. $10.4 \; m$
E. $12.28 \; m$
Post time 2025-9-8 22:24:32