In Hindu chronology, the longest time measure is a para. One para equals 311 040 000 000 000 years. What is the value in nanoseconds?
A. 9.8157 x 10 ²⁹ ns
B. 98.157 x 10 ³⁰ ns
C. 9.8157 x 10 ³⁰ ns
D. 9.8157 x 10 ³¹ ns​