A Train,starting from Rest,accelerates Along the Platform at a Uniform

Multiple Choice

A train,starting from rest,accelerates along the platform at a uniform rate of 0.6 m/s².A passenger standing on the platform is 5 m away from the door when the train starts to pull away and heads toward the door at an acceleration of 1.2 m/s².How long does it take the passenger to reach the door?

A) 3.0 s
B) 17 s
C) 7.1 s
D) 5.6 s
E) 4.1 s