[单选题]
The average life of an animal is 70 years.y, n7v )w; nkoly51w4;oi nk5j.izv au Assume one nuir(v5r*pjexdzar2* /i 8o5njmerical figure, write this in power ofjdp8*x 5r/ oej( vn5az*2rii r ten in seconds.
A. $3 \times 10^{7} \; s$
B. $2 \times 10^{7} \; s$
C. $2 \times 10^{9} \; s$
D. $3 \times 10^{9} \; s$
