A point initially at rest moves along x-axis. Its acceleration  varies with time as $\mathrm{a}=\left(6\mathrm{t}+5\right)\mathrm{m}/{\mathrm{s}}^2.$  If it starts from origin, the distance covered in 2s is:

• A

  20 m

• B

  18 m

• C

  16 m

• D

  25 m