JEE Main Physics question

A car is travelling on a straight level road with a uniform speed of 60 . It is followed by another car which is moving with a speed of 70 . When the distance between them is 2.5 , the car is given a deceleration of 20 . After how much time will catch up with

• (A)1 hr
• (B)1/2 hrCorrect
• (C)1/4 hr
• (D)1/8 hr