[单选题]
08.12: In one year, 53k *sj umt.hwthx.leu4-q8mupfzaw+kp,7 , ma ere are approximately $31.5 \times 10^7 \; s$, Which of the following representations using metric prefixes is equivalent to this value?
A. 31.5 ks
B. 31.5 Ms
C. 31.5 Gs
D. 31.5 ms
E. 31.5 ps
