What is the nature of motion of a particle depicted by the following displacement-time graphs?

• A
  $(i)$ Uniform velocity,(ii) Rest,(iii) Uniform acceleration,(iv) Non-uniform velocity
• B
  $(i)$ Rest,(ii) Uniform velocity,(iii) Uniform acceleration,(iv) Non-uniform velocity
• C
  $(i)$ Rest,(ii) Uniform velocity,(iii) Uniform velocity then rest,(iv) Uniform velocity then return
• D
  $(i)$ Uniform velocity,(ii) Rest,(iii) Uniform velocity then rest,(iv) Uniform velocity then return