The position of an object moving in a straight line is given by the equation x = （3t3 + 7t + 5） m, where t is in seconds. What is the object’s acceleration at time t = 5 seconds（）

A. 415 m/s2

B. 232 m/s2

C. 115 m/s2

D. 90 m/s2

E. 35 m/s2