[单选题]
A sky diver falls through the mf*rvsi3mct8y e k,66air at terminal 2 w.153ah hlk2my hawmvelocity. The force of air resistance on him mhky1ma.3h2h2 a5ww lis
A. half his weight.
B. equal to his weight.
C. twice his weight.
D. cannot be determined from the information given
