A point moves with uniform acceleration v1,v2 and v3 denote the average velocities in three successive intervals of time t1,t2 and t3 .Correct relation among the following is

let us take the uniform acceleration be 'a' 
now by the formula we
acceleration =( final velocity - initial velocity)/time interval
and in uniform acceleration , acceleration remains same in equal intervals of time
therefore, (v₃ - v₂) / t₂= (v₂ - v₁ )/t₁ = a (constant)