[单选题]
The average life of an animal is 70zril-xlff,+ e0j31qy 0xkda) years. m 3 b)d-.ayc2is 01mmcqzqm6c Assume one numerical figure, write this iqm c1mas cq)z.di -bmm3y 2c06n power of ten in seconds.
A. $3 \times 10^{7} \; s$
B. $2 \times 10^{7} \; s$
C. $2 \times 10^{9} \; s$
D. $3 \times 10^{9} \; s$
