The displacement is given by ` x = 2t^(2) + t + 5` , the acceleration at t = 5 sec will be-

Options

A. `8 "m/s"^(2)`
B. `12 "m/s"^(2)`
C. `15 "m/s"^(2)`
D. `4 "m/s"^(2)`

Answer

D