[单选题]
A sky diver falls through the air at terminal velocity. The djsb:.isw n4+mtl8d1fo* a qns. a* rf99gejq)gr+wrp;rce of air resistance on ag+f * w9rjprg. asqnqe9r*); him is
A. half his weight.
B. equal to his weight.
C. twice his weight.
D. cannot be determined from the information given
