A body moving from its initial position of rest along a straigth line convers 1 m n 1s. It it covers 8 m in the next, then the body is moving with ___________

Options

A. uniform velocity
B. an acceleration of `2m s^(-2)` in the frist second
C. average `t=1 s "to" 3s "of" 2 m s^(-1)` from acceleration
D. both (b) and (c)